D. O. Pai, P. Andankar, L. Peruri, S. Prabhu, and S. Lakshmivenkateshiah, “Clinical spectrum and outcome determinants in persistent pulmonary hypertension of the newborn in a tertiary care centre: a cross-sectional study ”, Int J Contemp Pediatr, vol. 13, no. 11, pp. 2259–2266, Oct. 2026.