- Correspondence to Professor Ana I M Miguel, Department of Community Medicine, Centre for Health Technology, Services Research (CINTESIS), Information and Health Decision Sciences (MEDCIDS), University of Porto, Oporto 4200-319, Portugal;
- Received November 12, 2018
- Revised December 10, 2018
- Accepted December 31, 2018
- First published February 6, 2019.
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