Kangwana BB, Kedenge SV, Noor AM, Alegana VA, Nyandigisi AJ, Pandit J, Fegan GW, Todd J, Snow RW, Goodman CA(2013). The effect of an anti-malarial subsidy programme on the quality of service provision of artemisinin-based combination therapy in Kenya: a cluster randomized controlled trial. Malaria Journal, 12: 81