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Villiger, Peter M; Caliezi, Gion; Cottin, Véronique; Förger, Frauke; Senn, Alfred; Østensen, Monika (2010). Effects of TNF antagonists on sperm characteristics in patients with spondyloarthritis. Annals of the rheumatic diseases, 69(10), pp. 1842-4. London: BMJ Publishing Group 10.1136/ard.2009.127423
