Household air pollution and respiratory symptoms a month before and during the stringent COVID-19 lockdown levels 5 and 4 in South Africa - Caradee Wright; Thandi Kapwata; Nada Abdelatif; Chiara Batini; Bianca Wernecke; Zamantimande Kunene; Danielle Millar; Angela Mathee; Renée Street; Rikesh Panchal; Anna Hansell; Rebecca Cordell; et al. (Clean Air Journal, 2022)