COVID-19 Outpatients – Early Risk-Stratified Treatment with Zinc Plus Low Dose Hydroxychloroquine and Azithromycin: A Retrospective Case Series Study
Derwand et al., International Journal of Antimicrobial Agents, doi:10.1016/j.ijantimicag.2020.106214 (preprint 7/3)
https://c19hcq.org/derwand.html