- Correspondence to Dr Humberto Azpurua, Maternal Fetal Medicine, Centro Materno Fetal Santa Paula Av, Circunvalación del Sol, Urb Santa Paula Caracas, 1059, Venezuela;
- Received December 28, 2016
- Revised March 15, 2017
- Accepted March 22, 2017
- First published April 5, 2017.
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