Evaluation of clinical signs and causes of lower urinary tract disease in European cats. - Gerber, B; Boretti, FS; Kley, S; Laluha, P; Muller, C; Sieber, N; Unterer, S; Wenger, M; Fluckiger, M; Glaus, T; Reusch, CE (J Small Anim Pract, 2005)