1 Lawrence Center for Quality and Safety, Massachusetts General Hospital (C Naureckas Li), Boston, Mass; Division of Pediatric Infectious Diseases (C Naureckas Li), Boston Children's Hospital, Boston, Mass; Harvard Medical School (C Naureckas Li, CA Sacks, PT Masiakos, MR Flaherty), Boston, Mass. Electronic address: Caitlin.li@childrens.harvard.edu.
2 Harvard Medical School (C Naureckas Li, CA Sacks, PT Masiakos, MR Flaherty), Boston, Mass; Department of Medicine (CA Sacks), Massachusetts General Hospital, Boston, Mass.
3 Harvard Medical School (C Naureckas Li, CA Sacks, PT Masiakos, MR Flaherty), Boston, Mass; Department of Pediatric Surgery (PT Masiakos), Massachusetts General Hospital, Boston, Mass.
4 Harvard Medical School (C Naureckas Li, CA Sacks, PT Masiakos, MR Flaherty), Boston, Mass; Department of Pediatrics (MR Flaherty), Massachusetts General Hospital, Boston, Mass.