Pereira, Andrea Lübe de S Thiago, Ruth Guinsburg, Maria Fernanda Branco de Almeida, Ana Cristina Monteiro, Amélia Miyashiro Nunes dos Santos, and Benjamin Israel Kopelman. “Validity of Behavioral and Physiologic Parameters for Acute Pain Assessment of Term Newborn Infants”. São Paulo Medical Journal 117, no. 2 (March 3, 1999): 72–80. Accessed October 16, 2025. https://periodicosapm.emnuvens.com.br/spmj/article/view/2447.