The viva-voce examination on the Ph.D thesis entitled post-covid-19 syndrome among the patients in some selected communities of bangladesh was defended by Shamima Parveen held on January 22, 2025 at 10:00 am at the office of Director, Institute of Environmental Science, University of Rajshahi, Rajshahi-6206, Bangladesh. Principal Supervisor Professor Dr. Md. Redwanur Rahman Institute of Environmental Science University of Rajshahi, Co-Supervisor Professor Dr. Md. Habibur Rahman Department of Zoology, University of Rajshahi