N Kulshrestha1, D Srivastava2, T Ghatak2, M S Yadav3, S Samanta4. 1. Department of Microbiology, KGMU, Lucknow, Uttar Pradesh, India. 2. Department of Anesthesia and Critical Care, IIMS and R, Lucknow, Uttar Pradesh, India. 3. Department of Urology, KGMU, Lucknow, Uttar Pradesh, India. 4. Department of Critical Care Medicine, SGPGIMS, Lucknow, Uttar Pradesh, India.