Ogada, Japheth, Kenya Medical Training College (KMTC)
Ogendo, Dr. Marsellah, Kenya Medical Training College (KMTC)
Ogirisen , Felix , Delta State Ministry of Environment, Asaba, Nigeria
Ogutu, Joel Peter, asinde Muliro University of Science and Technology
Ohaka, J. C. , Rivers State University Teaching Hospital, Port Harcourt
Okamba, Armand P., University of Kinshasa
Okeke, Chukwunwendu Aloysius Franklin, Nnamdi Azikiwe University
Okpara, E. P., Rivers State University, Port Harcourt
Okwuosa , Okwuosa Joseph , Federal Medical Centre Asaba
Olowabi, Owolabi MO, Federal Medical Centre Asaba
Olubiyi, Simeon Olukayode , University of Ilorin, Ilorin, Kwara State, Nigeria.
Oluchina, Dr Sherry, Jomo Kenyatta University of Agriculture and Technology
Omondi, Dickens, Jaramogi Oginga Odinga University of Science and Technology
Onuwaje , Okoke Eseoghene, Delta State University Teaching Hospital
Onwuchekwa, Elendu, C. , Abia State University Uturu
Onwukwe, Nnaemeka A, Madonna University, Rivers State Nigeria
Onyambu, Meshack, Kenyatta University
Opio-Emuna , Simon Henry, Sigma Africa Healthcare LTD
Oranu , E.O., University of Port Harcourt Teaching Hospital, Port Harcourt, Nigeria
Oriji , E. I, College of Medical Sciences, Rivers State University, Port Harcourt, Nigeria
Oriji, I. E, Rivers State University, Port Harcourt
Oriji , V. K., University of Port Harcourt Teaching Hospital, Port Harcourt, Nigeria
Osarenkhoe, Osaretin John, Igbinedion university teaching hospital, Nigeria
Otwori, Daniel A., Great Lakes University of Kisumu
Oulmaati, A, Abdelmalek Essaadi University, Morocco

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