[Clinical study of the prevention of hemorrhagic disease of the premature newborn infant with vitamin K 1].
D000933:Antifibrinolytic Agents; D006474:Hemorrhagic Disorders; D006801:Humans; D007231:Infant, Newborn; D007235:Infant, Premature, Diseases; D014812:Vitamin K / Q000628:therapy*; D010837:Vitamin K 1; D006475:Vitamin K Deficiency Bleeding / Q000517:prevention & control*
D000933:Antifibrinolytic Agents; D014812:Vitamin K; D010837:Vitamin K 1
HEMORRHAGIC DISEASE OF NEWBORN/prevention and control; INFANT, PREMATURE/diseases; VITAMIN K/therapy