Bioimpedance-assessed muscle wasting and its relation to nutritional intake during the first week of ICU: a pre-planned secondary analysis of Nutriti Study oleh Cristian Deana, Jan Gunst, Silvia De Rosa, Michele Umbrello, Matteo Danielis, Daniele Guerino Biasucci, Tommaso Piani, Antonella Cotoia, Alessio Molfino, Luigi Vetrugno, Nutriti Study Group