- Correspondence to Dr Marco Sperandeo, Unit of Interventional Ultrasound of Internal Medicine, “Casa Sollievo della Sofferenza” Hospital, IRCCS, Viale dei Cappuccini snc, San Giovanni Rotondo, FG 71013, Italy;
- Received May 15, 2016
- Revised August 18, 2016
- Accepted September 20, 2016
- First published October 14, 2016.
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