- Correspondence to Dr Francesca Romana Spinelli, Dipartimento di Scienze Cliniche, Internistiche, Anestesiologiche e Cardiovascolari - Reumatologia, Sapienza University of Rome, Roma 00161, Italy;
- Received April 22, 2020
- Accepted April 22, 2020
- First published May 4, 2020.
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