Sandra Terroba-Seara,1,2 Ignacio Oulego-Erroz , et al. Pulmonary artery peak Doppler velocity as an estimator of systemic blood flow and predictor of intraventricular haemorrhage in preterm infants: a multicentre prognostic accuracy study doi:10.1136/ archdischild-2024-327196 nov 2024 Published by BMJ.