TY - JOUR A1 - Trippo, Ulrike A1 - Koebnick, Corinna A1 - Zunft, Hans-Joachim Franz A1 - Greil, Hans T1 - Bioelectrical impedance analysis for predicting body composition : what about the external validity of new regression equations? Y1 - 2004 SN - 0002-9165 ER -