Busse J, Ebrahim S, Riva J, Bance S, Guyatt G, Bagby M, et al. 0179 Independent Medical Evaluations - Important, neglected, in need of reform: a systematic review. Occup Environ Med 71 Suppl 1: A83.
Fishbain DA1, Cole B, Cutler RB, Lewis J, Rosomoff HL, Rosomoff RS. A structured evidence-based review on the meaning of nonorganic physical signs: Waddell signs. Pain Med. 2003 Jun;4(2):141-81.
Fishbain DA, Cutler RB, Rosomoff HL, Rosomoff RS. Is there a relationship between nonorganic physical findings (Waddell signs) and secondary gain/malingering? Clin J Pain. 2004 Nov-Dec;20(6):399-408.
Friberg E, Gustafsson K, Alexanderson K. Hearing difficulties, ear-related diagnoses and sickness absence or disability pension - a systematic literature review. BMC Public Health. 2012;12:772.