[1] Enugu State Univ Sci & Technol, Coll Med, Med & Surg, Enugu, Nigeria
[2] Escuela Latinoamericana Med, Internal Med, Kingston, Jamaica
[3] Worcestershire Acute Hosp NHS Trust, Internal Med, Worcester, England
[4] Univ Calabar, Coll Med, Internal Med, Calabar, Nigeria
[5] Near East Univ, Med Sch, Nicosia, Cyprus
[6] Gen Hosp Odan, Gen Practice, Lagos, Nigeria
[7] Loyola Univ Med Ctr, Internal Med Nephrol, Chicago, IL USA
[8] Amer Univ Antigua, Coll Med, Anat Sci, St John, Antigua & Barbu