Fig. 2From: Validity of gestational age estimates by last menstrual period and neonatal examination compared to ultrasound in VietnamDistribution of gestational age (GA) estimated by last menstrual period (LMP), Farr examination and ultrasound measurements (US). a Distribution of GA estimated by LMP (gray) and US (black). b Distribution of GA estimated by Farr examination (white) and US (black)Back to article page