Spaying-induced coat changes: the role of gonadotropin, GnRH and GnRH treatment on the hair cylce of female dogs - Reichler, IM; Welle, M; Eckrich, C; Sattler, U; Barth, A; Hubler, M; Nett-Mettler, CS; Jöchle, W; Arnold, S (Vet Dermatol, 2008)