Solomon DH, Finkelstein JS, Shadick N, LeBoff MS, Winalski CS, Stedman M, Glass R, Brookhart MA, Weinblatt ME, Gravallese EM. The relationship between focal erosions and generalized osteoporosis in postmenopausal women with rheumatoid arthritis. Arthritis Rheum. 2009 Jun; 60(6):1624-31.