Kim, Ryong Sik , Institute for Infection Control, Faculty of Hygiene, Pyongyang University of Medical Sciences, Democratic People’s Republic of Korea. Kim, Ryong Sik, Institute for Infection Control, Faculty of Hygiene, Pyongyang University of Medical Sciences, Democratic People’s Republic of Korea. Kim, Sang Jun , Dental Department at Affiliated Hospital of Pyongyang University of Medical Sciences, Democratic People’s Republic of Korea. Kim, Sang-Jun , Department of Dental, Hospital of Pyongyang University of Medical Sciences, Pyongyang, Democratic People’s Republic of Korea. Kim, Song-Hwan, Department of Gastroenterology, Hospital of Pyongyang University of Medical Science, Democratic People’s Republic of Korea. Kim, Song-Hwan, Department of Gastroenterology, Pyongyang University of Medical Science, Democratic People’s Republic of Korea. Kim, Suk-Yong, Pyongyang University of Medical Science, Pyongyang, Democratic People’s Republic of Korea. Kim, Sung Jin, Koryo Medicine General Hospital, Pyongyang, Democratic People’s Republic of Korea. Kim, To Myong , Pyongyang University of Medical Sciences Kim, Ui Hun , Department of Dentistry, Gang Gon Sariwon College of Medical Science, Sariwon City, Democratic People’s Republic of Korea. Kim, Un Mi , Institute of Chiropractic and Developmental Disorders of Children, Pyongyang University of Medical Sciences, DPRK. Kim, Yong Ho, Department of Pathology, Pyongyang University of Medical Sciences, DPR Korea. Kim, Yongjun, Pyongyang University of Medical Sciences, Central District, Pyongyang, Democratic People’s Republic of Korea. Kim, Yun Gyong , Institute of Chiropractic and Developmental Disorders of Children, Pyongyang University of Medical Sciences, DPRK. Ko, Min-Hyok , Pyongyang University of Medical Sciences, Ryonhwa-dong, Central District, Pyongyang, Democratic People’s Republic of Korea. Kong, Yong–Ju , Department of Endocrinology & Metabolism, Pyongyang University of Medical Sciences, Ryonhwa-dong, Central District, Pyongyang, Democratic People’s Republic of Korea. Kreem, Khalid R. Kwon, Yong Paek, Pyongyang University of Medical Sciences, Pyongyang, Democratic People’s Republic of Korea. Kye, Chun Yong, Department of Obstetrics, Pyongyang Maternity Hospital, Democratic People’s Republic of Korea. Kye, Chun-Yong, Pyongyang Maternity Hospital, Pyongyang, Democratic People’s Republic of Korea. Kzar, Hatem Kareem , Dept. of Dentistry, Hilla University College, Babylon, Iraq.