513 posted 259 days ago by DasBurt 259 days ago by DasBurt +513 / -0 11 comments share 11 comments share save hide report block hide child comments Comments (11) sorted by: top new old worst You're viewing a single comment thread. View all comments, or full comment thread. ▲ 5 ▼ – Byebyegurgy 5 points 258 days ago +5 / -0 This was my shower thought today. Did we do a double blind study to show that masks are effective? permalink save report block reply
This was my shower thought today. Did we do a double blind study to show that masks are effective?