1. Department of Orthopedics, Örebro Medical Center Hospital, S-701 85, Örebro, Sweden, Tel. +19-15 10 00 ext 1542, Fax +19-187201
2. Department of Diagnostic Radiology, Örebro Medical Center Hospital, S-701 85, Örebro, Sweden, Tel. +19-15 10 00 ext 1542, Fax +19-187201