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. 2017 Jul 17;17:167. doi: 10.1186/s12887-017-0911-z

Fig. 2.

Fig. 2

Representative example of a cardiorespiratory recording from a preterm infant. The signals displayed, from top to bottom, are: electrocardiogram, rib cage movements, abdominal movements, sum of rib cage and abdominal movements, oxygen saturation and photoplethysmography