About a quarter of babies born in vaginal deliveries had a small amount of bleeding in their brains, while none delivered by Caesarean section did, according to a study published on Tuesday. But the researchers at the University of North Carolina School of Medicine in Chapel Hill said it was premature to view their surprising findings as an endorsement of C-sections. They said the findings suggest brain bleeding in some newborns has been commonplace in vaginal deliveries throughout history, but is being detected now only because of highly sophisticated imaging technology. "There's no evidence that these bleeds are associated with...