- Correspondence to Flora Blangis, Obstetrical, Perinatal and Pediatric Epidemiology Research team, Epidemiology and Statistics Research Center, Université de Paris, INSERM, F-75004 Paris, France;
- Received February 25, 2020
- Revised August 11, 2020
- Accepted August 27, 2020
- First published September 30, 2020.
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