1. Alderson, P. (1998), “Theories in health care and research: the importance of theories in health care”, BMJ, Vol. 317, pp. 1007‐10, available at: www.bmj.com/cgi/reprint/317/7164/1007 (accessed 12 November 2009).
2. Amanyeiwe, U., Hatt, L., Aneesa, A., Amy, T., Mona, M., De Valdenebro, V., Ogungbemi, K. and Kombe, G. (2008), Nigeria HIV/AIDS Service Provision Assessment 2008, Health System 20/20 Project, Abt Associates Inc, Bethesda, MD.
3. Anderson, R. (2007), “Thematic content analysis: institute of transpersonal psychology”, available at: www.wellknowingconsulting.org/publications/pdfs/ThematicContentAnalysis.pdf (accessed 4 June 2011).
4. Aronovich, D. and Kinzett, S. (2001), Kenya: Assessment of Health Commodities Supply Chains and the Roles of KEMSA, DELIVER/John Snow, Arlington, VA.
5. Coyne, I. (1997), “Sampling in qualitative research, purposeful and theoretical sampling: merging or clear boundaries?”, Journal of Advanced Nursing, Vol. 26, pp. 623‐30, available at: http://dx.doi.org.ezproxy.liv.ac.uk/10.1046/j.1365‐2648.1997.t01‐25‐00999.x (accessed 12 November 2009).