1. Division of Plastic Surgery, University of Pennsylvania Health System, Philadelphia, PA, USA
2. Partner for Surgery, Guatemala City, Guatemala, Guatemala
3. Stream Studios, The Children's Hospital of Philadelphia, Philadelphia, PA, USA
4. Division of Otolaryngology, The Children's Hospital of Philadelphia, Perelman School of Medicine, Philadelphia, PA, USA
5. Research and Development Department, GlaxoSmithKline, Philadelphia, PA, USA
6. The Children’s Hospital of Philadelphia, Perelman School of Medicine, University of Pennsylvania, Philadelphia, PA, USA