Farrington, CP; Firth, MJ; Moulton, LH; Ravn, H; Andersen, PK; Evans, S; on behalf of the Working Group on Non-specific Effects of Vaccin; (2009) Epidemiological studies of the non-specific effects of vaccines: II - methodological issues in the design and analysis of cohort studies. Tropical medicine & international health, 14 (9). pp. 977-985. ISSN 1360-2276 DOI: https://doi.org/10.1111/j.1365-3156.2009.02302.x Full text not available from this repository.

Ali, M; Park, JK; von Seidlein, L; Acosta, CJ; Deen, JL; Clemens, JD; (2006) Organizational aspects and implementation of data systems in large-scale epidemiological studies in less developed countries. BMC public health, 6. p. 86. ISSN 1471-2458 DOI: https://doi.org/10.1186/1471-2458-6-86

Nyandieka, LN; Bowden, A; Wanjau, J; Fox-Rushby, JA; (2002) Managing a household survey: a practical example from the KENQOL survey. Health policy and planning, 17 (2). pp. 207-12. ISSN 0268-1080 DOI: https://doi.org/10.1093/heapol/17.2.207 Full text not available from this repository.

Solomon, AW; Akudibillah, J; Abugri, P; Hagan, M; Foster, A; Bailey, RL; Mabey, DC; (2001) Pilot study of the use of community volunteers to distribute azithromycin for trachoma control in Ghana. Bulletin of the World Health Organization, 79 (1). pp. 8-14. ISSN 0042-9686 https://researchonline.lshtm.ac.uk/id/eprint/16548