Large scale replication study of the association between HLA class II/BTNL2 variants and osteoarthritis of the knee in European-descent populations. oleh Ana M Valdes, Unnur Styrkarsdottir, Michael Doherty, David L Morris, Massimo Mangino, Agu Tamm, Sally A Doherty, Kalle Kisand, Irina Kerna, Ann Tamm, Margaret Wheeler, Rose A Maciewicz, Weiya Zhang, Kenneth R Muir, Elaine M Dennison, Deborah J Hart, Sarah Metrustry, Ingileif Jonsdottir, Gudbjorn F Jonsson, Helgi Jonsson, Thorvaldur Ingvarsson, Cyrus Cooper, Timothy J Vyse, Tim D Spector, Kari Stefansson, Nigel K Arden