1 Department of Pediatrics, Larner College of Medicine at the University of Vermont, 111 Colchester Ave Smith 5, Burlington, VT, 05401, USA. Leslie.Young@uvmhealth.org.
2 University of Arkansas for Medical Sciences, 4301 W. Markham St., Little Rock, AR, 72205, USA.
3 Department of Pediatrics, University of Cincinnati, 3333 Burnet Ave ML7009, Cincinnati, OH, 45229, USA.
4 Environmental Influences on Child Health Outcomes (ECHO) Program, Office of the Director, the National Institutes of Health, Three White Flint North 11601 Landsdown Street, Office 3D16, North Bethesda, MD, 20852, USA.
5 RTI International, 3040 East Cornwallis Road, Research Triangle Park, NC, 27709-2194, USA.
6 Duke University School of Medicine Duke Clinical Research Institute, 300 W. Morgan St, Durham, NC, 27701, USA.
7 College of Health and Human Services George Mason University, 4400 University Drive 2G7 Peterson Family Health Science Hall Room 5415 Fairfax, Virginia, 22030, USA.
8 University of Arkansas for Medical Sciences, 4301 West Markham, #781 COPH Room 3234, Little Rock, Arkansas, 72205-7199, USA.
9 Emory University School of Medicine, 2015 Uppergate Dr. NE, Suite 304, Atlanta, GA, 30322, USA.
10 Pregnancy and Perinatology Branch of the Eunice Kennedy Shriver National Institute of Child Health and Human Development, 6710 Rockledge Dr. Wing B, Rm2321-D, Bethesda, MD, 20892-7002, USA.
11 Arkansas Children's Research Institute, University of Arkansas for Medical Sciences, 13 Children's Way, ACRI Slot 512-35, Little Rock, AR, 72202, USA.
12 Department of Pediatrics, University of Louisville School of Medicine, 571 South Floyd Street Suite 342, Louisville, KY, 40202, USA.