title: Baby blue.
authors.affiliation: Institute for Heart, Vascular, and Stroke Care, Massachusetts General Hospital, Boston, MA, USA.
authors.forename: Lauren E
authors.initials: LE
authors.lastname: Ellis
authors.affiliation: Cardiovascular Division, Brigham and Women's Hospital, Boston, MA, USA jbeckman@partners.org.
authors.forename: Joshua A
authors.initials: JA
authors.lastname: Beckman