Ritu Verma1, Arpita Saha2, Kaushik Saha2. 1. Department of Pathology, Sanjay Gandhi Postgraduate Institute of Medical Sciences, Raebareli Road, Lucknow, India. dr_rituverma@rediffmail.com. 2. Department of Pathology, Sanjay Gandhi Postgraduate Institute of Medical Sciences, Raebareli Road, Lucknow, India.