1. Chronic obscure groin pain is commonly caused by enthesopathy: 'tennis elbow' of the groin;Ashby;Br J Surg,1994
2. Abdominal wall tenderness: a useful sign in the acute abdomen;Thomson;Lancet,1977
3. Abdominal wall pain: an alternative diagnosis;Gallegos;Br J Surg,1990
4. Painful rib syndrome: a review of 76 cases;Scott;Gut,1993
5. On various conditions that may simulate the referred pain of visceral disease, and a consideration of these from the point of view of cause and effect;Cyriax;Practitioner,1919