<prompt> Late onset hemorrhagic disease of newborn is characterized by all of the following features, EXCEPT:Usually occurs in cow-milk fed babiesOnset occurs at 4-12 week of ageIntracranial hemorrhage can occurIntramuscular vitamin K prophylaxis at bih has a protective role  <response>: Late onset hemorrhagic disease of newborn occur in infants at 2 to 12 weeks who are exclusively breast fed, because breast milk contains very low levels of vitamin K. Ref: Williams Obstetrics, 23rd Edition, Chapter 29; Nelsons Essentials of Pediatrics, 17th Edition, Pages 606, 607. 