- Correspondence to Professor Giovanni Scambia, Scienze della Salute della Donna e del Bambino e di Sanità Pubblica, Policlinico Universitario Agostino Gemelli, Roma 00168, Italy;
- Received December 10, 2018
- Revision received March 26, 2019
- Accepted April 1, 2019
- First published June 6, 2019.
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