This letter to the editor responds to a systematic review that suggested Hadlock estimated fetal weight formula maybe more accurate in estimating fetal weight than the INTERGROWTH-21st formula.

UOG: Stirnemann, J., Salomon, L.J. and Papageorghiou, A.T. (2020), INTERGROWTH-21st standards for Hadlock's estimation of fetal weight. Ultrasound Obstet Gynecol, 56: 946-948.