Procter et al., Reviews in Cardiovascular Medicine,
doi:10.31083/j.rcm.2020.04.260 (Peer Reviewed)
Clinical outcomes after early ambulatory multidrug therapy for high-risk SARS-CoV-2 (COVID-19) infection
Retrospective 922 outpatients, with 320 treated early due to age>50 or comorbidities, showing 2.2% hospitalization and 0.3% death, which authors note is considerably lower than reported in other studies in their region.
At least two of zinc, HCQ, and ivermectin were used, along with one antibiotic, and budesonide and/or dexamethasone.
Procter et al., 12/30/2020, peer-reviewed, 6 authors.