Selective digestive tract decontamination to prevent healthcare associated infections in critically ill children: the PICNIC multicentre randomised pilot clinical trial oleh Nazima Pathan, Kerry Woolfall, Mariana Popa, Gema Milla de la Fuente, Paloma Ferrando-Vivas, Alanna Brown, Theodore Gouliouris, Lyvonne N. Tume, Robert Shulman, Brian H. Cuthbertson, Isobel Sale, Richard G. Feltbower, John Myburgh, John Pappachan, David Harrison, Paul Mouncey, Kathryn Rowan, the PICNIC study investigators