F. R. Furlan, D. . Sgariboldi, P. . Brigatto, and E. M. . Pazzianotto- Forti, “Evaluation of respiratory muscle strength in individuals having Down syndrome: DOI: 10.15343/0104-7809.20153902182187”, Mundo Saude, vol. 39, no. 2, pp. 182–187, Apr. 2015.