A six-month randomized, controlled, double-blind, dose-response comparison of intravenous pamidronate (60 mg versus 10 mg) in the treatment of nonsteroidal antiinflammatory drug-refractory ankylosing spondylitis. - Maksymowych,W.P.; Jhangri,G.S.; Fitzgerald,A.A. (Arthritis Rheum, 2002)