1. Department of Microbiology, Government Doon Medical College, Patel Nagar, Dehradun, Uttarakhand, India.
2. Michael Ogon Laboratory for Orthopaedic Research, Orthopaedic Hospital Vienna-Speising, Speisinger Strasse, Vienna, Austria.
3. Department of Microbiology, All India Institute of Medical Sciences, New Delhi, India.