- Correspondence to Dr Lidia Mínguez-Alarcón, Department of Environmental Health, Harvard T.H. Chan School of Public Health, 665 Huntington Ave, Boston, MA 02115, USA;
- Received July 14, 2016
- Revised November 29, 2016
- Accepted December 5, 2016
- First published February 6, 2017.
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