Okay, Thelma Suely, Wagner Paes Oliveira, Roberto Raiz-Júnior, Joaquim Carlos Rodrigues, and Gilda Maria Bárbaro Del Negro. 2005. “ Frequency of the deltaF508 Mutation in 108 Cystic Fibrosis Patients in São Paulo: Comparison With Reported Brazilian Data ”. Clinics 60 (2): 131-34. https://doi.org/10.1590/S1807-59322005000200009.