No evidence of clinical efficacy of hydroxychloroquine in patients hospitalized for COVID-19 infection with oxygen requirement: results of a study using routinely collected data to emulate a target trial
bioRxiv (2020) - Comment
doi: 10.1101/2020.04.10.20060699 

Matthieu Mahevas, Viet-Thi Tran, Mathilde Roumier, Amelie Chabrol, Romain Paule, Constance Guillaud, Sebastien Gallien, Raphael Lepeule, Tali-Anne Szwebel, Xavier Lescure, Frederic Schlemmer, Marie Matignon, Mehdi Khellaf, Etienne Crickx, Benjamin Terrier, Caroline Morbieu, Paul Legendre, Julien Dang, Yoland Schoindre, Jean-Michel Pawlotski