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Submitted on: 13 December 2014.
Revised on: 09 April 2015.
Accepted on: 29 April 2015.
___________________JOURNAL OF BIOSOCIAL SCIENCE---CAMBRIDGE UNIV PRESS
Submitted on: 30 June 2022.
Revised on: 02 September 2022.
Accepted on: 05 October 2022.
___________________JOURNAL OF BIOSOCIAL SCIENCE---CAMBRIDGE UNIV PRESS
Submitted on: 02 April 2012.
Revised on: 03 July 2012.
Accepted on: 26 July 2012.
___________________JOURNAL OF BIOSOCIAL SCIENCE---CAMBRIDGE UNIV PRESS
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Submitted on: 10 September 1999.
Revised on: 12 December 1999.
Accepted on: 16 January 2000.
___________________JOURNAL OF BIOSOCIAL SCIENCE---CAMBRIDGE UNIV PRESS
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