1. Bristol Eye Hospital, Bristol - U.K.
2. Royal Victoria Eye and Ear Hospital, Dublin - Ireland
3. Alcon Laboratories, Watford, Herts - U.K.
4. (Bristol Eye Hospital - U.K.)
5. (Harley Street, London - U.K.)
6. (Royal Victoria Eye and Ear Hospital, Dublin - Ireland)
7. (Lechul University Hospital, Ste-Foy, Quebec - Canada)
8. (Montreal, Quebec - Canada)
9. (Clermont-Ferrand - France)
10. (Ottawa, Ontario - Canada)
11. (Furth, Nuremberg - Germany)
12. (L'Hopital des Enfants, Bordeaux - France)