Clinical diagnosis and geographic distribution of leptospirosis, Thailand. by Wuthiekanun, V, Sirisukkarn, N, Daengsupa, P, Sakaraserane, P, Sangkakam, A, Chierakul, W, Smythe, L, Symonds, M, Dohnt, M, Slack, A, Day, N, Peacock, S