[1] Medficient Hlth Syst, Family Med, Hanover, MD 21076 USA
[2] Lakeside Med Ctr, Family Med, Belle Glade, FL 33430 USA
[3] Kharkov Natl Univ, Med, Kharkov, Ukraine
[4] Richmond Gabriel Univ, Internal Med, Belair, St Vincent
[5] Amer Int Sch Med, Internal Med, Georgetown, WA USA
[6] Liverpool John Moores Univ, Publ Hlth, Liverpool, England
[7] Univ Lagos, Lagos, Nigeria
[8] Univ Nigeria, Internal Med, Coll Med, Nsukka, Enugu State, Nigeria
[9] Madonna Univ, Gen Med, Elele, Nigeria
[10] Peoples Friendship Univ Russia, Family Med, Moscow, Russia
[11] Univ Ottawa, Med & Surg, Ottawa, ON, Canada
[12] Windsor Univ, Internal Med, Sch Med, Cayon, St Kitts & Nevi
[13] Korle Bu Teaching Hosp, Internal Med, Accra, Ghana