Sachdeva Sandeep, Amir Ali, Ansari Mohd A, Khalique Najam, Khan Zulfia, Alam Seema
Department of Community Medicine, Jawaharlal Nehru Medical College (JNMC), Aligarh Muslim University (AMU), Aligarh, Uttar Pradesh, India.
Indian J Community Med. 2010 Apr;35(2):353-5. doi: 10.4103/0970-0218.66889.