[1] Univ Kinshasa, Univ Kinshasa Hosp, Dept Internal Med, Hypertens Unit Cardiol, Kinshasa, DEM REP CONGO
[2] CISSS Outaouais, Ctr Rech, Direct Enseignement Relat Univ & Rech, Gatineau, PQ, Canada
[3] Univ Mbuji Mayi, Dept Med, Kasai Oriental, Mbuji Mayi, DEM REP CONGO
[4] Univ Kinshasa, Univ Kinshasa Hosp, Dept Internal Med, Div Endocrinol & Metab Dis, Kinshasa, DEM REP CONGO
[5] Imperial Coll London, Imperial Clin Trials Unit, Stadium House,68 Wood Lane, London W12 7RH, England
[6] Imperial Coll London, Dept Primary Care & Publ Hlth, St Dunstans Rd, London W6 8RP, England