Expression of concern: Hydroxychloroquine or chloroquine with or without a macrolide for treatment of COVID-19: a multinational registry analysis

The Lancet
Jun 13, 2020 Volume 395 Number 10240 p1813-1882, e102-e106
https://www.thelancet.com/journals/lancet/issue/current

Expression of concern: Hydroxychloroquine or chloroquine with or without a macrolide for treatment of COVID-19: a multinational registry analysis
The Lancet Editors