[1] Our Lady Apostles Hosp, Med & Surg, Akwanga, Nigeria
[2] Cent Hosp, Internal Med, Benin, Nigeria
[3] Univ Ibadan, Med & Surg, Ibadan, Nigeria
[4] NHS Nat Hlth Serv Trust, Royal Cornwall Hosp, Internal Med, Truro, England
[5] Nnamdi Azikiwe Univ, Internal Med, Awka, Nigeria
[6] Bingham Univ Teaching Hosp, Med & Surg, Jos, Nigeria
[7] Univ Calabar, Med & Surg, Calabar, Nigeria
[8] SBH St Barnabas Hosp Heath Syst, St Barnabas Hosp, Internal Med, New York, NY USA
[9] NES Healthcare, Neurol, Aylesbury, England
[10] Ladoke Akintola Univ Technol, Med & Surg, Ogbomosho, Nigeria