1. Molecular and Cellular Medicine Department, Institute for Regenerative Medicine at Scott & White, Texas A&M Health Science Center, Temple, Texas.
2. Department of Stomatology, Beijing Friendship Hospital, Capital Medical University, Beijing, China.
3. Department of Dermatology, University of Pennsylvania School of Medicine, Philadelphia, Pennsylvania.
4. Department of Cell and Developmental Biology, University of Pennsylvania School of Medicine, Philadelphia, Pennsylvania.
5. Department of Pharmacology, Graduate School of Medicine, Kyoto University, Kyoto, Japan.
6. Samuel Lunenfeld Research Institute, Mount Sinai Hospital, Toronto, Canada.