Common use of XXXXXXXX AND W Clause in Contracts

XXXXXXXX AND W. XXXXXXX XXXXXX hereby agree, in accordance with Rule 13d-1(k) under the Act, to file a statement on Schedule 13G relating to their ownership of Common Stock of the Issuer and do hereby further agree that said statement shall be filed on behalf of each of them. FRIEDMAN, BILLINGS, XXXXXX GROUP, INC. Dated: February 16, 1999 By: /s/ Xxxxxxx X. Xxxxxxxx --------------------------------- Name: Xxxxxxx X. Xxxxxxxx Title: Chairman Dated: February 16, 0000 XXXXXX XXXXXXXX, INC. By: /s/ Xxxx X. Xxxxxxxxxx ---------------------------------- Name: Xxxx X. Xxxxxxxxxx Title: President Dated: February 16, 1999 /s/ Xxxx X. Xxxxxxxx ---------------------------------- Xxxx X. Xxxxxxxx /s/ Xxxxxxx X. Xxxxxxxx Dated: February 16, 1999 ---------------------------------- Xxxxxxx X. Xxxxxxxx /s/ W. Xxxxxxx Xxxxxx Dated: February 16, 1999 ---------------------------------- W. Xxxxxxx Xxxxxx

XXXXXXXX AND W. XXXXXXX XXXXXX hereby agree, in accordance with Rule 13d-1(k) under the Act, to file a statement on Schedule 13G relating to their ownership of Common Stock of the Issuer and do hereby further agree that said statement shall be filed on behalf of each of them. FRIEDMAN, BILLINGS, XXXXXX GROUP, INC. Dated: February 16October 13, 1999 By: /s/ Xxxxxxx X. Xxxxxxxx --------------------------------- Name: Xxxxxxx X. Xxxxxxxx Title: Chairman Dated: February 16October 13, 0000 XXXXXX XXXXXXXX1999 ORKNEY HOLDINGS, INC. By: /s/ Xxxx X. Xxxxxxxxxx ---------------------------------- Name: Xxxx X. Xxxxxxxxxx Title: President Dated: February 16October 13, 1999 /s/ Xxxx X. Xxxxxxxx ---------------------------------- Xxxx X. Xxxxxxxx /s/ Xxxxxxx X. Xxxxxxxx Dated: February 16October 13, 1999 ---------------------------------- Xxxxxxx X. Xxxxxxxx /s/ W. Xxxxxxx Xxxxxx Dated: February 16October 13, 1999 ---------------------------------- W. Xxxxxxx Xxxxxx

XXXXXXXX AND W. XXXXXXX XXXXXX hereby agree, in accordance with Rule 13d-1(k) under the Act, to file a statement on Schedule 13G relating to their ownership of Common Stock of the Issuer and do hereby further agree that said statement shall be filed on behalf of each of them. FRIEDMAN, BILLINGS, XXXXXX GROUP, INC. Dated: February 1614, 1999 2000 By: /s/ Xxxxxxx XXXXXXX X. Xxxxxxxx XXXXXXXX --------------------------------- Name: Xxxxxxx X. Xxxxxxxx Title: Chairman ORKNEY HOLDINGS, INC. Dated: February 1614, 0000 XXXXXX XXXXXXXX, INC. 2000 By: /s/ Xxxx XXXX X. Xxxxxxxxxx ---------------------------------- XXXXXXXXXX --------------------------------- Name: Xxxx X. Xxxxxxxxxx Title: President Dated: February 1614, 1999 2000 /s/ Xxxx XXXX X. Xxxxxxxx XXXXXXXX ---------------------------------- Xxxx X. Xxxxxxxx Dated: February 14, 2000 /s/ XXXXXXX X. XXXXXXXX ---------------------------------- Xxxxxxx X. Xxxxxxxx Dated: February 1614, 1999 ---------------------------------- Xxxxxxx X. Xxxxxxxx 2000 /s/ W. Xxxxxxx Xxxxxx Dated: February 16, 1999 XXXXXXX XXXXXX ---------------------------------- W. Xxxxxxx Xxxxxx

XXXXXXXX AND W. XXXXXXX XXXXXX hereby agree, in accordance with Rule 13d-1(k) under the Act, to file a statement on Schedule 13G relating to their ownership of Common Stock of the Issuer and do hereby further agree that said statement shall be filed on behalf of each of them. FRIEDMAN, BILLINGS, XXXXXX GROUP, INC. Dated: February 16April 10, 1999 2000 By: /s/ Xxxxxxx XXXXXXX X. Xxxxxxxx XXXXXXXX --------------------------------- Name: Xxxxxxx X. Xxxxxxxx Title: Chairman Dated: February 16, 0000 XXXXXX XXXXXXXXORKNEY HOLDINGS, INC. Dated: April 10, 2000 By: /s/ Xxxx XXXX X. Xxxxxxxxxx ---------------------------------- XXXXXXXXXX --------------------------------- Name: Xxxx X. Xxxxxxxxxx Title: President Dated: February 16April 10, 1999 2000 /s/ Xxxx XXXX X. Xxxxxxxx XXXXXXXX ---------------------------------- Xxxx X. Xxxxxxxx /s/ Xxxxxxx X. Xxxxxxxx Dated: February 16, 1999 ---------------------------------- Xxxxxxx X. Xxxxxxxx /s/ W. Xxxxxxx Xxxxxx Dated: February 16, 1999 ---------------------------------- W. Xxxxxxx XxxxxxXxxxxxxx

XXXXXXXX AND W. XXXXXXX RXXXXXX XXXXXX hereby agree, in accordance with Rule 13d-1(k) under the Act, to file a statement on Schedule 13G relating to their ownership of Common Stock of the Issuer and do hereby further agree that said statement shall be filed on behalf of each of them. FRIEDMAN, BILLINGS, XXXXXX RXXXXX GROUP, INC. Dated: February 16August 13, 1999 2001 By: /s/ Xxxxxxx EXXXXXX X. Xxxxxxxx XXXXXXXX --------------------------------- Name: Xxxxxxx Exxxxxx X. Xxxxxxxx Title: Chairman Dated: February 16August 13, 0000 XXXXXX XXXXXXXX2001 ORKNEY HOLDINGS, INC. By: /s/ Xxxx KXXX X. Xxxxxxxxxx XXXXXXXXXX ---------------------------------- Name: Xxxx Kxxx X. Xxxxxxxxxx Title: President Dated: February 16August 13, 1999 2001 /s/ Xxxx EXXX X. Xxxxxxxx XXXXXXXX ---------------------------------- Xxxx Exxx X. Xxxxxxxx /s/ Xxxxxxx EXXXXXX X. Xxxxxxxx XXXXXXXX Dated: February 16August 13, 1999 2001 ---------------------------------- Xxxxxxx Exxxxxx X. Xxxxxxxx /s/ W. Xxxxxxx Xxxxxx RXXXXXX XXXXXX Dated: February 16August 13, 1999 2001 ---------------------------------- W. Xxxxxxx Rxxxxxx Xxxxxx

XXXXXXXX AND W. XXXXXXX XXXXXX hereby agree, in accordance with Rule 13d-1(k) under the Act, to file a statement on Schedule 13G relating to their ownership of Common Stock of the Issuer and do hereby further agree that said statement shall be filed on behalf of each of them. FRIEDMAN, BILLINGS, XXXXXX GROUP, INC. Dated: February 1615, 1999 2001 By: /s/ Xxxxxxx XXXXXXX X. Xxxxxxxx XXXXXXXX --------------------------------- Name: Xxxxxxx X. Xxxxxxxx Title: Chairman Dated: February 1615, 0000 XXXXXX XXXXXXXX, INC. By: /s/ Xxxx XXXX X. Xxxxxxxxxx XXXXXXXXXX ---------------------------------- Name: Xxxx X. Xxxxxxxxxx Title: President Dated: February 1615, 1999 2001 /s/ Xxxx XXXX X. Xxxxxxxx XXXXXXXX ---------------------------------- Xxxx X. Xxxxxxxx Dated: February 15, 2001 /s/ XXXXXXX X. XXXXXXXX ---------------------------------- Xxxxxxx X. Xxxxxxxx Dated: February 1615, 1999 ---------------------------------- Xxxxxxx X. Xxxxxxxx 2001 /s/ W. Xxxxxxx Xxxxxx Dated: February 16, 1999 XXXXXXX XXXXXX ---------------------------------- W. Xxxxxxx Xxxxxx

XXXXXXXX AND W. XXXXXXX XXXXXX hereby agree, in accordance with Rule 13d-1(k) under the Act, to file a statement on Schedule 13G relating to their ownership of Common Stock of the Issuer and do hereby further agree that said statement shall be filed on behalf of each of them. FRIEDMAN, BILLINGS, XXXXXX GROUP, INC. Dated: February 16September 13, 1999 2001 By: /s/ Xxxxxxx XXXXXXX X. Xxxxxxxx XXXXXXXX --------------------------------- Name: Xxxxxxx X. Xxxxxxxx Title: Chairman Dated: February 16September 13, 0000 XXXXXX XXXXXXXX2001 ORKNEY HOLDINGS, INC. By: /s/ Xxxx XXXX X. Xxxxxxxxxx XXXXXXXXXX ---------------------------------- Name: Xxxx X. Xxxxxxxxxx Title: President Dated: February 16September 13, 1999 2001 /s/ Xxxx XXXX X. Xxxxxxxx XXXXXXXX ---------------------------------- Xxxx X. Xxxxxxxx /s/ Xxxxxxx XXXXXXX X. Xxxxxxxx XXXXXXXX Dated: February 16September 13, 1999 2001 ---------------------------------- Xxxxxxx X. Xxxxxxxx /s/ W. Xxxxxxx Xxxxxx XXXXXXX XXXXXX Dated: February 16September 13, 1999 2001 ---------------------------------- W. Xxxxxxx Xxxxxx

XXXXXXXX AND W. XXXXXXX RXXXXXX XXXXXX hereby agree, in accordance with Rule 13d-1(k) under the Act, to file a statement on Schedule 13G relating to their ownership of Common Stock of the Issuer and do hereby further agree that said statement shall be filed on behalf of each of them. FRIEDMAN, BILLINGS, XXXXXX RXXXXX GROUP, INC. Dated: February 16May 14, 1999 2001 By: /s/ Xxxxxxx EXXXXXX X. Xxxxxxxx XXXXXXXX --------------------------------- Name: Xxxxxxx Exxxxxx X. Xxxxxxxx Title: Chairman Dated: February 16May 14, 0000 XXXXXX XXXXXXXX2001 ORKNEY HOLDINGS, INC. By: /s/ Xxxx KXXX X. Xxxxxxxxxx XXXXXXXXXX ---------------------------------- Name: Xxxx Kxxx X. Xxxxxxxxxx Title: President Dated: February 16May 14, 1999 2001 /s/ Xxxx EXXX X. Xxxxxxxx XXXXXXXX ---------------------------------- Xxxx Exxx X. Xxxxxxxx /s/ Xxxxxxx EXXXXXX X. Xxxxxxxx XXXXXXXX Dated: February 16May 14, 1999 2001 ---------------------------------- Xxxxxxx Exxxxxx X. Xxxxxxxx /s/ W. Xxxxxxx Xxxxxx RXXXXXX XXXXXX Dated: February 16May 14, 1999 2001 ---------------------------------- W. Xxxxxxx Rxxxxxx Xxxxxx

XXXXXXXX AND W. XXXXXXX XXXXXX hereby agree, in accordance with Rule 13d-1(k) under the Act, to file a statement on Schedule 13G relating to their ownership of Common Stock of the Issuer and do hereby further agree that said statement shall be filed on behalf of each of them. FRIEDMAN, BILLINGS, XXXXXX GROUP, INC. Dated: February 1615, 1999 2000 By: /s/ Xxxxxxx X. Xxxxxxxx --------------------------------- Name: Xxxxxxx X. Xxxxxxxx Title: Chairman Dated: February 1615, 0000 XXXXXX XXXXXXXX, INC. By: /s/ Xxxx X. Xxxxxxxxxx ---------------------------------- Name: Xxxx X. Xxxxxxxxxx Title: President Dated: February 1615, 1999 2000 /s/ Xxxx X. Xxxxxxxx ---------------------------------- Xxxx X. Xxxxxxxx /s/ Xxxxxxx X. Xxxxxxxx Dated: February 1615, 1999 2000 ---------------------------------- Xxxxxxx X. Xxxxxxxx /s/ W. Xxxxxxx Xxxxxx Dated: February 1615, 1999 2000 ---------------------------------- W. Xxxxxxx Xxxxxx

XXXXXXXX AND W. XXXXXXX XXXXXX hereby agree, in accordance with Rule 13d-1(k) under the Act, to file a statement on Schedule 13G relating to their ownership of Common Stock of the Issuer and do hereby further agree that said statement shall be filed on behalf of each of them. FRIEDMAN, BILLINGS, XXXXXX GROUP, INC. Dated: February 16December 10, 1999 1998 By: /s/ Xxxxxxx XXXXXXX X. Xxxxxxxx XXXXXXXX --------------------------------- Name: Xxxxxxx X. Xxxxxxxx Title: Chairman Dated: February 16December 10, 0000 XXXXXX XXXXXXXX1998 ORKNEY HOLDINGS, INC. By: /s/ Xxxx XXXX X. Xxxxxxxxxx XXXXXXXXXX ---------------------------------- Name: Xxxx X. Xxxxxxxxxx Title: President Dated: February 16December 10, 1999 1998 /s/ Xxxx XXXX X. Xxxxxxxx XXXXXXXX ---------------------------------- Xxxx X. Xxxxxxxx Dated: December 10, 1998 /s/ XXXXXXX X. XXXXXXXX ---------------------------------- Xxxxxxx X. Xxxxxxxx Dated: February 16December 10, 1999 ---------------------------------- Xxxxxxx X. Xxxxxxxx 1998 /s/ W. Xxxxxxx Xxxxxx Dated: February 16, 1999 XXXXXXX XXXXXX ---------------------------------- W. Xxxxxxx Xxxxxx

XXXXXXXX AND W. XXXXXXX XXXXXX hereby agree, in accordance with Rule 13d-1(k) under the Act, to file a statement on Schedule 13G relating to their ownership of Common Stock of the Issuer and do hereby further agree that said statement shall be filed on behalf of each of them. FRIEDMAN, BILLINGS, XXXXXX GROUP, INC. Dated: February 16January 19, 1999 2000 By: /s/ Xxxxxxx X. Xxxxxxxx --------------------------------- Name: Xxxxxxx X. Xxxxxxxx Title: Chairman Dated: February 16January 19, 0000 XXXXXX XXXXXXXX2000 ORKNEY HOLDINGS, INC. By: /s/ Xxxx X. Xxxxxxxxxx ---------------------------------- Name: Xxxx X. Xxxxxxxxxx Title: President Dated: February 16January 19, 1999 2000 /s/ Xxxx X. Xxxxxxxx ---------------------------------- Xxxx X. Xxxxxxxx /s/ Xxxxxxx X. Xxxxxxxx Dated: February 16January 19, 1999 2000 ---------------------------------- Xxxxxxx X. Xxxxxxxx /s/ W. Xxxxxxx Xxxxxx Dated: February 16January 19, 1999 2000 ---------------------------------- W. Xxxxxxx Xxxxxx

XXXXXXXX AND W. XXXXXXX XXXXXX hereby agree, in accordance with Rule 13d-1(k) under the Act, to file a statement on Schedule 13G relating to their ownership of Common Stock of the Issuer and do hereby further agree that said statement shall be filed on behalf of each of them. FRIEDMAN, BILLINGS, XXXXXX GROUP, INC. Dated: February 1615, 1999 2001 By: /s/ Xxxxxxx XXXXXXX X. Xxxxxxxx XXXXXXXX --------------------------------- Name: Xxxxxxx X. Xxxxxxxx Title: Chairman Dated: February 1615, 0000 XXXXXX XXXXXXXX, INC. 2001 FBR GENOMICS LLC By: /s/ Xxxx XXXXXXX X. Xxxxxxxxxx XXXXXXXX ---------------------------------- Name: Xxxx Xxxxxxx X. Xxxxxxxxxx Xxxxxxxx Title: President Managing Member Dated: February 1615, 1999 2001 /s/ Xxxx XXXX X. Xxxxxxxx XXXXXXXX ---------------------------------- Xxxx X. Xxxxxxxx Dated: February 15, 2001 /s/ XXXXXXX X. XXXXXXXX ---------------------------------- Xxxxxxx X. Xxxxxxxx Dated: February 1615, 1999 ---------------------------------- Xxxxxxx X. Xxxxxxxx 2001 /s/ W. Xxxxxxx Xxxxxx Dated: February 16, 1999 XXXXXXX XXXXXX ---------------------------------- W. Xxxxxxx Xxxxxx

XXXXXXXX AND W. XXXXXXX XXXXXX hereby agree, in accordance with Rule 13d-1(k) under the Act, to file a statement on Schedule 13G relating to their ownership of Common Stock of the Issuer and do hereby further agree that said statement shall be filed on behalf of each of them. FRIEDMAN, BILLINGS, XXXXXX GROUP, INC. Dated: February 1614, 1999 2000 By: /s/ Xxxxxxx X. Xxxxxxxx --------------------------------- Name: Xxxxxxx X. Xxxxxxxx Title: Chairman Dated: February 1614, 0000 XXXXXX XXXXXXXX, INC. By: /s/ Xxxx X. Xxxxxxxxxx ---------------------------------- Name: Xxxx X. Xxxxxxxxxx Title: President Dated: February 1614, 1999 2000 /s/ Xxxx X. Xxxxxxxx ---------------------------------- Xxxx X. Xxxxxxxx /s/ Xxxxxxx X. Xxxxxxxx Dated: February 1614, 1999 2000 ---------------------------------- Xxxxxxx X. Xxxxxxxx /s/ W. Xxxxxxx Xxxxxx Dated: February 1614, 1999 2000 ---------------------------------- W. Xxxxxxx Xxxxxx

XXXXXXXX AND W. XXXXXXX XXXXXX hereby agree, in accordance with Rule 13d-1(k) under the Act, to file a statement on Schedule 13G relating to their ownership of Common Stock of the Issuer and do hereby further agree that said statement shall be filed on behalf of each of them. FRIEDMAN, BILLINGS, XXXXXX GROUP, INC. Dated: February 16July 11, 1999 2001 By: /s/ Xxxxxxx XXXXXXX X. Xxxxxxxx XXXXXXXX --------------------------------- Name: Xxxxxxx X. Xxxxxxxx Title: Chairman Dated: February 16July 11, 0000 XXXXXX XXXXXXXX, INC. By: /s/ Xxxx XXXX X. Xxxxxxxxxx XXXXXXXXXX ---------------------------------- Name: Xxxx X. Xxxxxxxxxx Title: President Dated: February 16July 11, 1999 2001 /s/ Xxxx XXXX X. Xxxxxxxx XXXXXXXX ---------------------------------- Xxxx X. Xxxxxxxx /s/ Xxxxxxx XXXXXXX X. Xxxxxxxx XXXXXXXX Dated: February 16July 11, 1999 2001 ---------------------------------- Xxxxxxx X. Xxxxxxxx /s/ W. Xxxxxxx Xxxxxx XXXXXXX XXXXXX Dated: February 16July 11, 1999 2001 ---------------------------------- W. Xxxxxxx Xxxxxx