1. Graduate Program in Medical Sciences: Endocrinology , Universidade Federal do Rio Grande do Sul , Porto Alegre , Brazil
2. Faculty of Health Sciences , Universidade Zambeze , Beira , Mozambique
3. Diabetes and Metabolism Group, Centro de Pesquisa Clínica , Hospital de Clínicas de Porto Alegre , Porto Alegre , Brazil
4. Laboratory Diagnosis Division, Clinical Biochemistry Unit , Hospital de Clínicas de Porto Alegre (HCPA) , Porto Alegre , Brazil
5. Nuvisan Pharma Services , Porto Alegre , Brazil
6. Endocrinology Division and Experimental Research Centre , Hospital de Clínicas de Porto Alegre , Porto Alegre , Brazil