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Ruhdorfer A, Dannhauer T, Wirth W, Hitzl W, Kwoh CK, Guermazi A, Hunter DJ, Benichou O, Eckstein F; Osteoarthritis Initiative Investigators.Ruhdorfer A, et al. Among authors: dannhauer t.Arthritis Care Res (Hoboken). 2013 Jul;65(7):1034-42. doi: 10.1002/acr.21965.Arthritis Care Res (Hoboken). 2013.PMID: 23401316Free article.