Authors: Kreienbrock, L Broll, S

Citation: L. Kreienbrock et S. Broll, Methodical aspects of quality assurance in veterinary epidemiological studies., DEUT TIER W, 106(9), 1999, pp. 381-385

Authors: Berger, K Broll, S Winkelmann, J Heberlein, I Muller, T Ries, V

Citation: K. Berger et al., Reliability analysis of the PDQ-39 (German version), AKT NEUROL, 26(4), 1999, pp. 180-184