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Eta- and Spearmańs correlation for the different characteristics and pulmonary hypertension (PH)-severity at initial, 24- and 48-hour evaluation. o/e LHR, observed/expected lung-head ratio; TFLV, total fetal lung volume; MRI, magnetic resonance imaging; ECMO, extracorporal membrane oxygenation; FETO, fetoscopic endoluminal tracheal occlusion.
