1. Department of Obstetrics, Federal University of São Paulo, São Paulo, Brazil
2. Service of Acupuncture – Department of Medicine II – Rio Preto Medical School, São José do Rio Preto, Brazil
3. Department of Statistics, Rio Preto Medical School, São José do Rio Preto, Brazil
4. Department of Medicine I – Rio Preto Medical School, São José do Rio Preto, Brazil
5. Department of Pathology – Rio Preto Medical School, São José do Rio Preto, Brazil