M. C. da Costa, G. U. Eckert, B. G. B. Fortes, J. B. Fortes Filho, R. C. Silveira, and R. S. Procianoy, “ Oral glucose for pain relief during examination for retinopathy of prematurity: a masked randomized clinical trial ”, Clinics, vol. 68, no. 2, pp. 199–204, Jan. 2013, doi: 10.6061/CLINICS/2013(02)OA13.