Table 1.

Published literature search strategy: databases and key words

Databases	PubMed	EconLit	IBSS
Key words	Private sector†; Commerce†*; Private providers; Retail sector; Supply chain; Distribution chain Anti-malarials†; Malaria†; Non-prescription drugs†;Prescription drugs†; Drugs, essential† Price; Pricing; Markup(s); Profit margin; Price component Developing countries†; Africa†; Asia, Western†; Asia, Southeastern†; Latin America†	Private sector; Retail sector; Wholesale; Supply chain; Anti-malarials; Pharmaceuticals Price; Pricing; Markup(s); Profit margin; Price component

† Mesh term; *The interchange of goods or commodities, especially on a large scale, between different countries or between populations within the same country. It includes trade (the buying, selling, or exchanging of commodities, whether wholesale or retail) and business (the purchase and sale of goods to make a profit) [http://www.ncbi.nlm.nih.gov/sites/entrez, accessed 10 March 2008]. PubMed searches were limited to government publications, journal articles and technical reports.