S. R.C., K. N., T. H., and J. A.K., “POLYMORPHISM IN INTERLEUKIN-4 GENE AND THE RISK OF CHRONIC OBSTRUCTIVE PULMONARY DISEASE IN A NORTH INDIAN POPULATION : A CASE-CONTROL STUDY”, The Scientific Temper, vol. 2, no. 1&2, pp. 15–20, Jul. 2011.