International Journal of Preventive Medicine (Int J Prev Med)2008-780231220120730900901ENDepartment of Neurology, Dr. Ram Manohar Lohia Institute of Medical Sciences, Vibhooti Khand, Gomti Nagar, Lucknow, Uttar Pradesh, IndiaDepartment of Dermatology and Venereology, Jawahar Lal Nehru Hospital and Research Centre, Bhilai, Chattisgarh, India2Department of Geriatric Medical Health, King George Medical University, Lucknow, Uttar Pradesh, IndiaDepartment of Neurosurgery, JIPMER, Pondicherry, IndiaDept. of Obstetrics & Gynaecology, JIPMER, Pondicherry-605006.Department of Surgery, Guru Gobind Singh Govt hospital, Raghubir Nagar, New Delhi-110027, India2012072920120730-http://ijpm.mui.ac.ir/index.php/ijpm/article/view/831http://ijpm.mui.ac.ir/index.php/ijpm/article/download/831/741