1. Sildenafil does not reliably improve exercise performance in hypoxia: a systematic review. Issue 1 (29th March 2019) Authors: Carter, Eric Alexander; Lohse, Keith; Sheel, William; Koehle, Michael Journal: BMJ open sport & exercise medicine Issue: Volume 5:Issue 1(2019) Page Start: Record Type: Journal Article View Content: Available online (eLD content is only available in our Reading Rooms) ↗