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Khan, M A and Walley, J D and Witter , Sophie and Shah, S K and Javeed, S (2006) Tuberculosis patient adherence to direct observation: results of a social study in Pakistan. Health policy and planning, 20 (6). pp. 354-365. ISSN 0268-1080

Khan, M A and Walley, J D and Witter , Sophie and Imran, Safdar, N (2002) Costs and cost-effectiveness of different DOT strategies for the treatment of tuberculosis in Pakistan. Health policy and planning, 17 (2). pp. 178-186. ISSN 0268-1080

Walley, J D and Witter , Sophie and Nicoll, A (2001) Simplified antiviral prophylaxis with or and without artificial feeding to reduce mother-to-child transmission of HIV in low and middle income countries: modelling positive and negative impact on child survival. Medical Science Moniter, 7 (5). pp. 1043-1051. ISSN 1234-1010