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Filippi, Luca, et al. "Study Protocol: Safety and Efficacy of Propranolol 0.2% Eye Drops in Newborns With a Precocious Stage of Retinopathy of Prematurity (DROP-ROP-0.2%): A Multicenter, Open-label, Single Arm, Phase II Trial." BMC Pediatr 2017.

Filippi, Luca, et al. "Study Protocol: Safety and Efficacy of Propranolol 0.2% Eye Drops in Newborns With a Precocious Stage of Retinopathy of Prematurity (DROP-ROP-0.2%): A Multicenter, Open-label, Single Arm, Phase II Trial." BMC Pediatr 2017.