[1] Migori Cty Referral Hosp, Migori, Kenya
[2] Univ Nairobi, Sch Pharm, Nairobi, Kenya
[3] Kenyatta Natl Hosp, Directorate Pharmaceut Serv, Nairobi, Kenya
[4] Univ Strathclyde, Strathclyde Inst Pharm & Biomed Sci, Glasgow, Scotland
[5] Sefako Makgatho Hlth Sci Univ, Sch Pharm, Ga Rankuwa, South Africa