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McPake, Barbara and Witter , Sophie and Ensor , Tim and Fustukian, Suzanne and Newlands, D and Martineau, T and Chirwa, Y (2013) Removing financial barriers to access reproductive, maternal and newborn health services: the challenges and policy implications for human resources for health. Human Resources for Health, 11 . ISSN 1478-4491
Witter , Sophie and Jones , A and Ensor , Tim (2013) How to (or not to) . . . measure performance against the Abuja target for public health expenditure. Health policy and planning . pp. 1-6. ISSN 0268-1080
Chirwa, Y and Witter , Sophie and Munjoma, M and Mashange, W and Ensor , Tim and McPake, Barbara and Munyati, S (2013) The human resource implications of improving financial risk protection for mothers and newborns in Zimbabwe. BMC Health Services Research , 13 . p. 197. ISSN 1472-6963
Witter , Sophie and Ensor , Tim (2012) Financing maternal health care services. In: Maternal and perinatal mortality in developing countries. CABI. ISBN 978-1845937454
McCoy , David and Bennett , Sara and Witter , Sophie and Pond , Bob and Baker , Brook and Gow , Jeff and Chand , Sudeep and Ensor , Tim and McPake, Barbara (2008) Salaries and incomes of health workers in sub-Saharan Africa. Lancet, 371 (9613). pp. 675-681. ISSN 0140-6736
Ensor , Tim and Witter , Sophie (2008) PROPOSED REVISIONS TO THE SDIP – STRENGTHENING A MAJOR NATIONAL INITIATIVE FOR SAFE MOTHERHOOD IN NEPAL. Working Paper. Options for DFID and MoHP, London.
Witter , Sophie and Ensor , Tim (2007) Evaluating a health financing policy change: framework and suggested approaches. Technical Report. Immpact, University of Aberdeen.
Ensor , Tim and Witter , Sophie (2007) Health Worker Incentives Survey (HWIS). Manual. Immpact, University of Aberdeen.
Ensor , Tim and Witter , Sophie (2001) Health economics in low income countries: adapting to the reality of the unofficial economy. Health Policy, 57 (1). pp. 1-13. ISSN 0168-8510
Witter , Sophie and Ensor , Tim and Thompson , R and Jowett, M (2000) Health Economics for Developing Countries. A Practical Guide. MacMillan Education, London. ISBN 0-333-75205-8.