Submitted on: 29 July 2010.
Revised on: 17 August 2010.
Accepted on: 12 September 2010.
POSTGRADUATE MEDICAL JOURNAL
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Submitted on: 13 January 2000.
Revised on: 20 January 2000.
Accepted on: 02 February 2000.
POSTGRADUATE MEDICAL JOURNAL
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Submitted on: 04 February 2020.
Revised on: 21 February 2020.
Accepted on: 06 March 2020.
POSTGRADUATE MEDICAL JOURNAL
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Submitted on: 10 January 2002.
Revised on: 28 January 2002.
Accepted on: 21 February 2002.
POSTGRADUATE MEDICAL JOURNAL---OXFORD UNIV PRESS
Submitted on: 14 June 2002.
Revised on: 24 June 2002.
Accepted on: 12 July 2002.
POSTGRADUATE MEDICAL JOURNAL
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