Improving hand hygiene in a medical ward: a multifaceted approach - Jie Li; Vijo Poulose; A Punithavathi; Marlini Ali; Faridah Mohamad Assalam; Khine Khine Phyo; Amanda Soh; Shi Hua Tan; Woo Boon Ang; Alvin Chew (BMJ Open Quality, 2022)