1. Clinical Immunology and Rheumatology, Department of Medicine, Dr Ram Manohar Lohia Institute of Medical Science, Lucknow, Uttar Pradesh, India.
2. Clinical Immunology, SGPGIMS, Lucknow, Uttar Pradesh, India
3. Clinical Immunology and Rheumatology, King George Medical College, Lucknow, Uttar Pradesh, India