Breeman, Linda D.
van der Pal, Sylvia
Verrips, Gijsbert H. W.
Baumann, Nicole
Bartmann, Peter
Wolke, Dieter
Funding for this research was provided by:
Agency for Health Care Policy and Research (HS-08385)
German Federal Ministry of Education and Science (PKE24, JUG14, 01EP9504 and 01ER0801)