title: Late presentation of haemorrhagic disease of the newborn.
abstract: A 9 week old infant presented with bleeding due to vitamin K deficiency. He had not been given vitamin K after birth but there was no associated risk factor for deficiency and he had not bled from circumcision performed at 8 days of age.
mesh_terms: D000367:Age Factors; D006801:Humans; D007223:Infant; D008297:Male; D014812:Vitamin K / Q000627:therapeutic use; D006475:Vitamin K Deficiency Bleeding / Q000188:drug therapy / Q000209:etiology*
chemical_list: D014812:Vitamin K