Abstract
Leutgeb, R; Engeser, P; Berger, S; Szecsenyi, J; Laux, G
Leutgeb, R (reprint author), Univ Heidelberg Hosp, Western Tower,Neuenheimer Feld 130-3, D-69120 Heidelberg, Germany.
BMC FAMILY PRACTICE, 2017; 18 ( ):