1. Department of Neurosurgery, Neurosurgery Service, Hospital Cristo Redentor, Porto Alegre, RS, Brazil
2. Department of Otolaryngology, Hospital Nossa Senhora da Conceição, Porto Alegre, RS, Brazil
3. Department of Endocrinology and Metabolism, Hospital Nossa Senhora da Conceição, Porto Alegre, RS, Brazil
4. Department of Internal Medicine, School of Medicine, Universidade do Vale do Rio dos Sinos, São Leopoldo, RS, Brazil