الوصول الحر: http://kipublications.ki.se/Default.aspx?queryparsed=id:147616045Test
الإتاحة: https://hdl.handle.net/10161/23297Test
الإتاحة: https://doi.org/10.1097/00008506-200610000-00076Testhttp://journals.lww.com/00008506-200610000-00076Test