1. Problem based learning: an approach to medical education;Barrows,1980
2. Emerging influences of pain medicine on clinical reasoning;Champion;Clinical Therapeutics,2000
3. Placebo analgesia: clinical considerations;Cheing;Physiotherapy,2002
4. Practical orthopaedic medicine;Corrigan,1983
5. Five qualitative traditions of inquiry. Qualitative inquiry and research design. Choosing among five traditions;Creswell,1998