National Medical Teacher Award Ceremony of the Institute of Medicine of Thailand Year 2021 to Professor Emeritus Clinical Professor Dr. Udom Kachintorn, Faculty of Medicine Siriraj Hospital Mahidol University with Associate Professor Dr. Preeda Thasapradit , Representative of the Group Secretary General of the Institute of Medicine of Thailand award which was held on Saturday, December 18, 2021 at Phramongkutklao College of Medicine