1. University of CaliforniaSan Francisco
2. University of WashingtonSeattle
3. Johns Hopkins UniversityBaltimore Maryland
4. Guy's, King's, and St. Thomas' Dental Institute, King's College LondonLondon UK
5. University of Buenos AiresBuenos Aires Argentina
6. RigshospitaletCopenhagen Denmark
7. Aravind Eye HospitalMadurai India
8. Kanazawa Medical UniversityIshikawa Japan
9. University of PennsylvaniaPhiladelphia
10. Peking Union Medical College HospitalBeijing China