Surgisphere is an American healthcare analytics company established in 2008 by Sapan Desai. Originally a textbook marketing company, it came under scrutiny in May 2020 after it provided large datasets of COVID-19 patients that were subsequently found to be unreliable. The questionable data were used in studies published in The Lancet and The New England Journal of Medicine in May 2020, suggesting that COVID-19 patients on hydroxychloroquine had a "significantly higher risk of death". In light of these studies, the World Health Organization decided to temporarily halt global trials of the drug hydroxychloroquine to treat COVID-19. After the studies were retracted, the WHO trials were resumed and then discontinued shortly after.