Development and internal validation of clinical prediction models for outcomes of complicated intra-abdominal infection by Ahmed, S, Bonnett, L, Melhuish, A, Adil, MT, Aggarwal, I, Ali, W, Bennett, J, Boldock, E, Burns, FA, Czarniak, E, Dennis, R, Flower, B, Fok, R, Goodman, AL, Halai, S, Hanna, T, Hashem, M, Hodgson, SH, Hughes, G, Hurndall, K-H, Hyland, R, Iqbal, MR, Jarchow-MacDonald, A, Kailavasan, M, Klimovskij, M, Laliotis, A, Lambourne, J, Lawday, S, Lee, F, Lindsey, B, Lund, JN, Mabayoje, DA, Malik, KI, Muir, A, Narula, HS, Ofor, U, Parsons, H, Pavelle, T, Prescott, K, Rajgopal, A, Roy, I, Sagar, J, Scarborough, C, Shaikh, S, Smart, CJ, Snape, S, Tabaqchali, MA, Tennakoon, A, Tilley, R, Vink, E