- Correspondence to Dionicio Angel Galarza-Delgado, Servicio de Reumatología, Hospital Universitario Dr Jose Eleuterio Gonzalez, Monterrey 64460, Mexico;
- Received June 9, 2020
- Revised June 10, 2020
- Accepted June 12, 2020
- First published June 22, 2020.
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