Joint Filing Agreement
Exhibit 99.1
The undersigned persons, on January 24, 2020, agree and consent to the joint filing on their behalf of this Schedule 13G in connection with their beneficial ownership of the Common Stock of Xxxx Life Sciences on December 31, 2019.
Tekla Capital Management LLC | |||
By | /s/ Xxxxx Xxxxxxxx | ||
Xxxxx Xxxxxxxx | |||
Xxxxxx X. Xxxxxxx | |||
By | /s/ Xxxxxx X. Xxxxxxx | ||
Xxxxxx X. Xxxxxxx |