1. Mass Spectrometry Centre, Department of Chemistry and QOPNA, University of Aveiro, Campus Universitário de Santiago, 3810-193 Aveiro, Portugal
2. Clinical Pathology, Centro Hospitalar do Baixo Vouga, Aveiro, Portugal
3. Department of Chemistry and CESAM and ECOMARE, University of Aveiro, Campus Universitário de Santiago, 3810-193 Aveiro, Portugal
4. Endocrinology, Diabetes and Nutrition, Centro Hospitalar do Baixo Vouga, Aveiro, Portugal
5. Department of Chemistry and CICECO, University of Aveiro, Campus Universitário de Santiago, 3810-193 Aveiro, Portugal