[1] Douala Univ, Fac Med & Pharmaceut Sci, Dept Publ Hlth, Douala, Cameroon
[2] Univ Dschang, Fac Med & Pharmaceut Sci, Dept Internal Med & Specialties, Dschang, Cameroon
[3] Dschang Reg Hosp Annex, Dschang, Cameroon
[4] Yaounde Cent Hosp, Yaounde, Cameroon
[5] Vrije Univ Brussel, Univ Ziekenhuis Brussel, Diabet Res Ctr, Brussels, Belgium
[6] Vrije Univ Brussel, Univ Ziekenhuis Brussel, Dept Internal Med, Brussels, Belgium
[7] Douala Gen Hosp, Douala, Cameroon
[8] Yaounde Teaching Hosp, Yaounde, Cameroon
[9] Univ Yaounde I, Fac Med & Biomed Sci, Dept Internal Med & Specialties, Yaounde, Cameroon
[10] Univ Bamenda, Fac Hlth Sci, Dept Clin Sci, Bamenda, Cameroon
[11] Univ Bamenda, Dept Publ Hlth, Fac Hlth Sci, Bamenda, Cameroon
[12] Univ Douala, Dept Biol Sci, Fac Med & Pharmaceut Sci, Douala, Cameroon