title: Reply.
authors.affiliation: Department of Pediatrics, Mattel Children's Hospital, David Geffen School of Medicine at UCLA, Los Angeles, California USA.
authors.forename: Mark S
authors.initials: MS
authors.lastname: Sklansky
authors.affiliation: Department of Obstetrics and Gynecology, David Geffen School of Medicine at UCLA, Los Angeles, California USA.
authors.forename: Greggory R
authors.initials: GR
authors.lastname: DeVore