Verma Sanjeev Kumar, Karmakar Saurabh
Department of Pulmonary Medicine, King George's Medical University, Lucknow, Uttar Pradesh, India.
Department of Pulmonary Medicine, Era's Lucknow Medical College and Hospital, Lucknow, Uttar Pradesh, India. E-mail:
Lung India. 2014 Apr;31(2):184-6. doi: 10.4103/0970-2113.129883.