Nosocomial infections among COVID-19 patients: an analysis of intensive care unit surveillance data. - Ong CCH; Farhanah S; Linn KZ; Tang YW; Poon CY; Lim AY; Tan HR; Binte Hamed NH; Huan X; Puah SH; Ho BCH; Soon MML; et al. (Antimicrobial resistance and infection control, 2021)