Calluses and corns
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Freeman DB. Corns and calluses resulting from mechanical hyperkeratosis. Am Fam Physician. 2002; 65(11): 2277-2280.
Pinzur MS. Guidelines for diabetic foot care: recommendations endorsed by the Diabetes Committee of the American Orthopaedic Foot and Ankle Society. Foot Ankle Int. 2005; 26(1): 113-119.