Characteristics, course and outcome of patients receiving physiotherapy in primary health care in Norway: design of a longitudinal observational project oleh Kari Anne I. Evensen, Hilde Stendal Robinson, Ingebrigt Meisingset, Astrid Woodhouse, Marit Thielemann, Wenche S. Bjorbækmo, Gard Myhre, Anne E. Hansen, Ottar Vasseljen, Nina K. Vøllestad