Verde-Aguilera, L. A.; Medina-Llamas, N. de J.; Covarrubias-Cornelio, S. A.; Ortega-Martinez, P. M.; Orozco-Flores, H. Non-Invasive Assessment of Fetal Lung Maturity: The Role of Pulmonary Artery Doppler and AT/ET Ratio in Predicting Respiratory Distress Syndrome. Int J Reprod Contracept Obstet Gynecol 2026, 15, 3351-3357.