269
Participants
Start Date
May 1, 2021
Primary Completion Date
August 31, 2021
Study Completion Date
September 30, 2021
SARS-CoV-2 RNA detection
SARS-CoV-2 RNA detection in used mask filters
2 Division of Nephrology,Department of Medicine Pramongkutklao Hospital and College of Medicine,Thailand, Bangkok
Bangkok Metropolitan Administration Medical College and Vajira Hospital
OTHER_GOV