1. Department of Ophthalmology University of Eastern Finland Kuopio Finland
2. Department of Haemostatic Disorders Medical University of Lodz Lodz Poland
3. Department of Pediatric Dentistry Medical University of Lodz Lodz Poland
4. Department of Ophthalmology Kuopio University Hospital Kuopio Finland
5. Faculty of Medicine, Collegium Medicum Mazovian Academy in Plock Plock 09‐402 Poland