Krishnappriya Ramachandran, Gupta Richa, Christopher Devasahayam Jesudas, Balamugesh Thankagunam, James Prince
Department of Pulmonary Medicine, Christian Medical College, Vellore, Tamil Nadu, India.
Clin Respir J. 2010 Apr;4(2):125-6. doi: 10.1111/j.1752-699X.2009.00163.x.