. "Forciea, Mary" . "10.7326/m20-3234" . "Yost, Jennifer" . . "Qaseem, Amir" . "Abraham, George" . "Ann Intern Med" . "Medline; PMC" . "32551813" . . . "Obley, Adam" . "PMC7357230" . . "Humphrey, Linda" . "Miller, Matthew" . "no-cc" . . "Jokela, Janet" . "2020-06-18"^^ . "Use of N95, Surgical, and Cloth Masks to Prevent COVID-19 in Health Care and Community Settings: Living Practice Points From the American College of Physicians (Version 1)" . "32551813" . . "Etxeandia-Ikobaltzeta, Itziar" . .