Armando, Ngombo http://orcid.org/0000-0001-7493-4365
Almeida, Rui http://orcid.org/0000-0001-8630-8767
Fernandes, José Marcelo http://orcid.org/0000-0003-4930-1587
Silva, Jorge Sá http://orcid.org/0000-0002-6273-1285
Boavida, Fernando http://orcid.org/0000-0002-1347-0242
Article History
Received: 28 October 2020
Accepted: 27 January 2021
First Online: 24 February 2021
Competing interests
: The authors declare no competing interests.