More than 66,000 children younger than three go to the emergency room annually for accidents involving nursery products, according to a new study. That's about one every eight minutes.A Nationwide Children's Hospital study published in the Pediatrics journal Monday looked at emergency room visits over a 21-year period, January 1991 through December 2011. Research showed nursery product-related injuries increased nearly 25% within the last eight years of the study.In eighty percent of the injury cases, the baby fell out of the product. For the purposes of the study, the term nursery products encompassed a host of baby products, including baby walkers, bouncers and changing tables. Most common injuries occurred with baby carriers (20%), cribs/mattresses (19%) and strollers (17%). Eighty-one percent of the injuries affected the head, face or neck.