Byrne, N; Behrens, RH; (2004) Airline crews risk for malaria on layovers in urban sub-saharan Africa: Risk assessment and appropriate prevention policy. Journal of travel medicine, 11 (6). pp. 359-63. ISSN 1195-1982 https://researchonline.lshtm.ac.uk/id/eprint/13995 Full text not available from this repository.