Core components for effective infection prevention and control programmes: new WHO evidence-based recommendations. - Storr, Julie; Twyman, Anthony; Zingg, Walter; Damani, Nizam; Kilpatrick, Claire; Reilly, Jacqui; Price, Lesley; Egger, Matthias; Grayson, M. Lindsay; Kelley, Edward; Allegranzi, Benedetta (Antimicrobial Resistance & Infection Control, 2017)