Normative Left Ventricular M-Mode Echocardiographic Values in Preterm Infants up to 2 kg.
Choudhry S, Salter A, Cunningham TW, Levy PT, Nguyen HH, Wallendorf M, Singh GK, Johnson MC. Normative Left Ventricular M-Mode Echocardiographic Values in Preterm Infants up to 2 kg. J Am Soc Echocardiogr. 2017 Aug; 30(8):781-789.e4.