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Morich, K.; Ohlerth, Stefanie; Reist, M.; Lang, Johann; Riitano, M.; Schawalder, Peter; Spreng, David (2003). Correlation of urinary nitric oxide concentrations with the development of hip dysplasia in Labrador retrievers. Veterinary record, 153(14), pp. 423-427. British Veterinary Association 10.1136/vr.153.14.423
