Study Exclusion reasons Remarks Reference(s)
Million, 2020 single-arm no control group

Million Travel Med Infect Dis 2020; :101738 10.1016/j.tmaid.2020.101738

 
Guerin, 2020 non randomized controlled trial other no binary endpoints

Guérin, Preprints 2020, 2020050486 (doi: 10.20944/preprints202005.0486.v1).

 
Alberici, 2020 retrospective cohort other HCQ efficacy or safety evaluation wasn't a prespecified endpoint

Alberici F Kidney Int 2020 Jul;98(1):20-26. 10.1016/j.kint.2020.04.030