Funding for this research was provided by:
Fundação para a Ciência e a Tecnologia (POCI-01-0145-FEDER-007274, POCI-01-0145-FEDER-029503, POCI-01-0145-FEDER-029017)
FP7 People: Marie-Curie Actions (609020)
Helse Sør-Øst RHF (2016123)
Received: 4 January 2020
Accepted: 12 March 2020
First Online: 25 March 2020
Compliance with ethical standards
: The authors declare that they have no conflict of interest.
: All procedures followed were in accordance with the ethical standards of the responsible committee on human experimentation (institutional and national) and with the Helsinki Declaration of 1964 and later versions. Informed consent to be included in the study, or the equivalent, was obtained from all patients.
: The use of retrospective samples from which informed consent cannot be obtained is authorised for research studies by the Portuguese law. Recent samples included in the study had written informed consent. The study was approved by Centro Hospitalar São João ethics committee under the reference number CES 122-15.
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