1 Rheumatology Department, Centro Hospitalar Tondela-Viseu, Viseu, Portugal; Faculty of Medicine, University of Porto, Porto, Portugal. Electronic address: 8511@hstviseu.min-saude.pt.
2 Rheumatology Department, Centro Hospitalar Vila Nova de Gaia/Espinho, Porto, Portugal.
3 Pediatrics Department, Centro Hospitalar Entre Douro e Vouga, Santa Maria da Feira, Portugal.
4 Pediatrics and Young Adult Rheumatology Unit, Centro Hospitalar Universitário de São João, Porto, Portugal.
5 Faculty of Medicine, University of Porto, Porto, Portugal; Pediatrics and Young Adult Rheumatology Unit, Centro Hospitalar Universitário de São João, Porto, Portugal.