RT Journal Article SR Electronic(1) A1 Ledet Muller, L A1 Hjertqvist, M A1 Payne, Lara A1 Pettersson, H A1 Olsson, A A1 Plym-Forshell, L A1 Andersson, Y YR T1 JF VO OP UL https://www.eurosurveillance.org/content/10.2807/esm.12.06.00718-fr