Middel Berrie, de Greef Mathieu, de Jongste Mike J L, Crijns Harry J G M, Stewart Roy, van den Heuvel Wim J A
Department of Health Sciences, School of Medicine, University of Groningen, A. Deusinglaan 1, 9713 AV Groningen, The Netherlands.
J Cardiopulm Rehabil. 2002 Jan-Feb;22(1):47-52. doi: 10.1097/00008483-200201000-00007.