Pulmonary haemorrhage as the earliest sign of severe leptospirosis in hamster model challenged with Leptospira interrogans strain HP358 by Philip, Noraini, Priya, Sivan Padma, Jumah Badawi, Ahmad Hussein, Mohd Izhar, Mohd Hafidz, Mohtarrudin, Norhafizah, Tengku Ibrahim, Tengku Azmi, Sekawi, Zamberi, Neela, Vasantha Kumari