M B S Sugunakar1, K N Maruthy2, C H Srinivas3, Priscilla Johnson4∗ 1 Tutor, Department of Physiology, G.S.L. Medical College, Rajahmundry, A P, India2 Professor and HOD, Department of Physiology, Narayana Medical College, Nellore, AP3 Professor and HOD, Department of Physiology, G.S.L.Medical College, Rajahmundry, AP4 Professor & HOD, Department of Physiology, Sri Ramachandra Medical College …