- Correspondence to Irene Moor, Public Health Institute of Medical Sociology Medical Faculty, Martin-Luther-University Halle-Wittenberg, Magdeburger Str. 8, 06112 Halle (Saale), Germany;
- Received April 1, 2016
- Revised September 5, 2016
- Accepted September 11, 2016
- First published September 28, 2016.
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