GNANASEKARAN, S.; P., N. An observational cohort study on the etiology and outcomes of neonates with thumb in flexion sign. International Journal of Contemporary Pediatrics, [S. l.], v. 8, n. 1, p. 138–142, 2020. DOI: 10.18203/2349-3291.ijcp20205520. Disponível em: https://www.ijpediatrics.com/index.php/ijcp/article/view/3877. Acesso em: 23 oct. 2025.