“Clean care for all – it’s in your hands”: the May 5th, 2019 World Health Organization SAVE LIVES: Clean Your Hands campaign - Peters, Alexandra; Pittet, Didier; Borzykowski, Tcheun; Tartari, Ermira; Kilpatrick, Claire; Chuen Mai, Safiah Hwai; Allegranzi, Benedetta (International Journal of Infection Control, 2019)