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Submitted on: 10 May 2022.
Revised on: 17 June 2022.
Accepted on: 13 July 2022.
Pan African Medical Journal---AFRICAN FIELD EPIDEMIOLOGY NETWORK-AFENET
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Submitted on: 31 December 1999.
Revised on: 16 January 2000.
Accepted on: 06 February 2000.
Pan African Medical Journal
Submitted on: 12 May 2008.
Revised on: 08 June 2008.
Accepted on: 19 June 2008.
Pan African Medical Journal---AFRICAN FIELD EPIDEMIOLOGY NETWORK-AFENET
Submitted on: 24 July 2005.
Revised on: 22 August 2005.
Accepted on: 28 August 2005.
Pan African Medical Journal
Submitted on: 07 January 1999.
Revised on: 06 February 1999.
Accepted on: 27 February 1999.
Pan African Medical Journal
Submitted on: 10 August 2011.
Revised on: 08 September 2011.
Accepted on: 25 September 2011.
Pan African Medical Journal---AFRICAN FIELD EPIDEMIOLOGY NETWORK-AFENET
Submitted on: 29 June 2013.
Revised on: 06 August 2013.
Accepted on: 24 August 2013.
Pan African Medical Journal