- Correspondence to Professor Mitsunori Miyashita, Division of Palliative Nursing, Health Sciences, Tohoku University Graduate School of Medicine, 2–1 Seiryo-machi, Aoba-ku, Sendai 980-8575, Japan;
- Received May 26, 2014
- Revision received July 16, 2015
- Accepted September 16, 2015
- First published October 22, 2015.
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