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Volumetric changes during diaphragmatic development (a, b). Changes in volume and surface of the developing diaphragm from ED15 to N0. The proportion of fibrotic tissue building the central tendon increased continually (a). Total volume as well as diaphragm to humeral ratio increase from ED15 to N0 and decreased until 240 min after birth, theoretically due to the arising negative pressure in the thoracic cavity with neonatal breathing (b). All values in mean ± SD
