Michael G Ison, Alberto Papi, Eugene Athan, Robert G Feldman, Joanne M Langley, Dong-Gun Lee, Isabel Leroux-Roels, Federico Martinon-Torres, Tino F Schwarz, Richard N van Zyl-Smit, Susanna Cuadripani, Quentin Deraedt, Nancy Dezutter, Catherine Gerard, Laurence Fissette, Stebin Xavier, Marie-Pierre David, Aurélie Olivier, Marie Van der Wielen, Dominique Descamps; AReSVi-006 study group