Ubaid, Aamer, Department of Medicine, Khyber Teaching Hospital, Peshawar, Pakistan.
Ugur, Kesici, Department of General Surgery, Ministry of Health, Akcaabat Hackali Baba State Hospital, Trabzon, Turkey.
Ulrichs, Timo, Universal Scientific Education and Research Network (USERN), The World. AND Institute for Research in International Assistance, Akkon University for Human Sciences, Berlin, Germany.
Utomo, Didik, Universal Scientific Education and Research Network (USERN), The World. AND Nusantara Institute of Science and Technology (NUSCIENTECH), Indonesia.