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Submitted on: 19 June 2002.
Revised on: 13 July 2002.
Accepted on: 19 July 2002.
Pan African Medical Journal
Submitted on: 04 October 2000.
Revised on: 05 November 2000.
Accepted on: 23 November 2000.
Pan African Medical Journal---AFRICAN FIELD EPIDEMIOLOGY NETWORK-AFENET
Submitted on: 16 August 2022.
Revised on: 01 September 2022.
Accepted on: 12 September 2022.
Pan African Medical Journal
Submitted on: 06 July 2022.
Revised on: 15 July 2022.
Accepted on: 05 August 2022.
Pan African Medical Journal---AFRICAN FIELD EPIDEMIOLOGY NETWORK-AFENET
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