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Föllmi, J; Steiger, A; Walzer, C; Robert, N; Geissbühler, U; Doherr, MG; Wenker, C (2007). A scoring system to evaluate physical condition and quality of life in geriatric zoo mammals. Animal welfare(16), pp. 309-318. Wheathampstead, UK: Universities Federation for Animal Welfare
Shibly, S; Schmidt, P; Robert, Nadia; Walzer, C; Url, A (2006). Immunohistochemical screening for viral agents in cheetahs (Acinonyx jubatus) with myelopathy. Veterinary record, 159(17), pp. 557-61. London: British Veterinary Association 10.1136/vr.159.17.557
