Morales Betancourt C, Pallás Alonso CR, Colomer Revuelta J, Cortés Rico O, Esparza Olcina MJ, Galbe Sánchez-Ventura J, et al. Prophylaxis with vitamin K to prevent the haemorrhagic disease of the newborn. Rev Pediatr Aten Primaria. 2021;23:195-205.