Moorfields Eye Hospital, London, United Kingdom
Childrens Hospital of Philadelphia (CHOP), Philadelphia, Pennsylvania, United States
Kuopio University Hospital Eye Clinic, Kuopio, Finland
Eye Clinic, University Hospital of Oulu, Oulu, Finland
Eye clinic, University Hospital of Kuopio, Kuopio, Finland
Ulrich Richter's surgery, Regensburg, Germany
Oulu University Hospital, Oulu, Finland
Praxis Dr. Hamacher, Starnberg, Germany
University of Helsinki, Department of Clinical Pharmacology, Helsinki, Biomedicum, Finland
Finn-Medi Research Oy, Tampere, Finland