A practical approach to defining aerosol-generating procedures. (19th August 2022) - Ling, Moi Lin; Cook, Alex R.; Marimuthu, Kalisvar; Pada, Surinder; Ang, Brenda; Thoon, Koh Cheng; Foo, Meow Ling; Ong, Xin Yi; Young, Adelina; Fisher, Dale