Qaseem A, Yost J, Etxeandia-Ikobaltzeta I, Miller MC, Abraham GM, Obley AJ, Forciea MA, Jokela JA, Humphrey LL, Centor RM, Andrews R, Bledsoe TA, Haeme R, Kansagara DL, Marcucci M. Should Clinicians Use Chloroquine or Hydroxychloroquine Alone or in Combination With Azithromycin for the Prophylaxis or Treatment of COVID-19? Living Practice Points From the American College of Physicians (Version 1). Ann Intern Med. 2020 07 21; 173(2):137-142.