Impact of immediate and continuous heart rate feedback by dry electrode ECG on time to initiation of ventilation after birth: protocol for a randomised controlled trial oleh Peter G Davis, Ketil Størdal, Jan Terje Kvaløy, Kari Holte, Hege Langli Ersdal, Joar Eilevstjønn, Peder Aleksander Bjorland, Hanne Markhus Pike, Siren Rettedal, Amalie Kibsgaard, Joanna Haynes, Thomas Bailey Tysland