... Medicine and Rehabilitation, School of Medicine, University of Ankara, Turkey and 3Department of Biostatistics, School of Medicine, University of Ankara, TurkeyEmail: Alan Tennant* - alantennant@compuserve.com; ... and AT were involved with the conception anddesign of the study. AK and SK arranged the data collec-tion, took part in the interpretation of the data, and the writing of the manuscript. AT and ... and AE undertook the dataanalysis and interpretation, and also participated in writ-ing the manuscript. All authors read and approved the final manuscript.References1. Beaton DE, Bombardier...