Ashok Kumar Pannu1, Manod Reddy Thatipally2, Bhanu Malhotra3, Vikas Suri4, Savita Kumari5, Subhash C Varma6
1Assistant Professor, 2,3MD Resident 4Associate Professor, 5,6Professor, Department of Internal Medicine, Post Graduate Institute of Medical Education and Research, Chandigarh (India).