- Correspondence to Professor Kerri M Winters-Stone, Oregon Health & Science University, School of Nursing Portland Campus, 3455 SW US Veterans Road, SN-ORD, Portland, OR 97239, USA;
- Received September 4, 2012
- Revised December 6, 2012
- Accepted December 11, 2012
- First published January 4, 2013.
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