1. Department of Family Medicine, University of Virginia School of Medicine, Charlottesville, Virginia;
2. American SIDS Institute, Naples, Florida;
3. Faculty of Science, Health and Engineering, University of the Sunshine Coast, Sippy Downs, Queensland, Australia;
4. The Lullaby Trust, London, United Kingdom;
5. Punch Consulting, Cambridge, United Kingdom; and
6. School of Social and Community Medicine, University of Bristol, Bristol, United Kingdom