EX-1
from SC 13G/A
1 page
Dated: February 14, 2020 Rtw Investments, LP By: /S/ Roderick Wong Roderick Wong, Managing Partner Rtw Master Fund, Ltd. By: /S/ Roderick Wong Roderick Wong, Director Roderick Wong By: /S/ Roderick Wong Roderick Wong, Individually
12/34/56