1 Faculty of Medicine, Department of Clinical Sciences in Malmö, General Practice, Lund University, Sweden; School of Health Science, Blekinge Institute of Technology, Karlskrona, Sweden. Electronic address: katarina.sjogren@med.lu.se.
2 Faculty of Medicine, Department of Clinical Sciences in Malmö, General Practice, Lund University, Sweden.
3 School of Health Science, Blekinge Institute of Technology, Karlskrona, Sweden.