1. Post-Graduate Program in Medical Sciences, Endocrinology, Universidade Federal do Rio Grande do Sul, Porto Alegre, Rio Grande do Sul, Brazil
2. Endocrinology Division, Hospital de Clínicas de Porto Alegre, Porto Alegre, Rio Grande do Sul, Brazil
3. Nephrology Division, Hospital de Clínicas de Porto Alegre, Port Alegre, Rio Grande do Sul, Brazil
4. Ophthalmology Division, Hospital de Clínicas de Porto Alegre, Port Alegre, Rio Grande do Sul, Brazil