1. Gastric bypass;Brolin;Surg Clin North Am,2001
2. Secondary causes of osteoporosis;Fitzpatrick;Mayo Clin Proc,2002
3. Osteomalacia;Hodgson,2000
4. Assessment of Fracture Risk and Application to Screening for Postmenopausal Osteoporosis;World Health Organization,1994
5. Gastric bypass in obesity;Mason;Surg Clin North Am,1967