1. Oftalmoplastica Roma, Rome, Italy
2. Orbital and Adnexal Service, Villa Tiberia Hospital – GVM Care & Research, Rome, Italy
3. Oculoplastic, Lacrimal & Orbital Service, Rotterdam Eye Hospital, Rotterdam, Netherlands
4. Department of Ophthalmology, Erasmus Medical Center, Rotterdam, Netherlands
5. Adnexal Service, Moorfields Eye Hospital, London, UK