- Correspondence to Professor Janelle Yorke, School of Nursing, Midwifery and Social Work, University of Manchester, Jean McFarlane University, University Place, Room 5.320, Oxford Road, Manchester, UK;
- Received October 14, 2014
- Revised April 15, 2015
- Accepted May 14, 2015
- First published June 3, 2015.
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- Data supplement 1 - Online supplement
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