- Correspondence to Professor J R Mesquita, Instituto de Ciências Biomédicas Abel Salazar. Rua de Jorge Viterbo Ferreira, 228, Porto 4050-313, Portugal;
- Received October 3, 2019
- Revision received April 24, 2020
- Accepted April 26, 2020
- First published May 13, 2020.
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