Submitted on: 20 December 1998.
Revised on: 28 December 1998.
Accepted on: 25 January 1999.
South African Family Practice
Submitted on: 30 June 2018.
Revised on: 28 July 2018.
Accepted on: 12 August 2018.
South African Family Practice
Submitted on: 12 March 2023.
Revised on: 28 March 2023.
Accepted on: 16 April 2023.
South African Family Practice---AOSIS
Submitted on: 11 August 2009.
Revised on: 01 September 2009.
Accepted on: 22 September 2009.
South African Family Practice
Submitted on: 15 December 2008.
Revised on: 26 December 2008.
Accepted on: 21 January 2009.
South African Family Practice---AOSIS
Submitted on: 24 November 2016.
Revised on: 01 January 2017.
Accepted on: 16 January 2017.
South African Family Practice---AOSIS
Submitted on: 06 May 2012.
Revised on: 13 June 2012.
Accepted on: 19 June 2012.
South African Family Practice
Submitted on: 07 December 2015.
Revised on: 26 December 2015.
Accepted on: 22 January 2016.
South African Family Practice---AOSIS
Submitted on: 08 November 2015.
Revised on: 22 November 2015.
Accepted on: 01 December 2015.
South African Family Practice
http://reply.papertrans.cn/3/284/28372/28372-30.png