RT Journal Article SR Electronic T1 Multiple vertebral compression fractures in a patient treated with corticosteroids for cystic fibrosis JF Canadian Journal of Surgery JO CAN J SURG FD Canadian Medical Association SP 383 OP 384 VO 45 IS 5 A1 David Yen A1 Douglas Hedden YR 2002 UL http://canjsurg.ca/content/45/5/383.abstract