Presumed risk factors and biomarkers for severe respiratory syncytial virus disease and related sequelae: Protocol for an observational multicenter, case-control study from the Res... by Jefferies, K, Drysdale, SB, Robinson, H, Clutterbuck, EA, Blackwell, L, McGinley, J, Lin, G-L, Galal, U, Nair, H, Aerssens, J, Öner, D, Langedijk, A, Bont, L, Wildenbeest, JG, Martinon-Torres, F, Rodríguez-Tenreiro Sánchez, C, Nadel, S, Openshaw, P, Thwaites, R, Widjojoatmodjo, M, Zhang, L, Nguyen, TL-A, Giaquinto, C, Giordano, G, Baraldi, E, Pollard, AJ