| Bijlsma JW | Department of Rheumatology & Clinical Immunology, F 02.127, University Medical Center, PO Box 85500, 3508 GA Utrecht, The Netherlands. |
| Blanksma LJ | Department of Ophthalmology, Academic Hospital, University of Groningen, Groningen, The Netherlands. |
| Bootsma H | Department of Oral and Maxillofacial Surgery, University Medical Center Groningen, Groningen, The Netherlands. |
| Derksen RH | Department of Rheumatology & Clinical Immunology, University Medical Center Utrecht, Utrecht, The Netherlands. |
| Hartkamp A | Department of Rheumatology & Clinical Immunology, University Medical Center Utrecht, Utrecht, The Netherlands. |
| Mansour K | Department of Ophthalmology, Academic Hospital, University of Groningen, Groningen, The Netherlands. k.mansour@ohk.umcg.nl |
| Pijpe J | Oral and Maxillofacial Surgery, University Medical Center Groningen, University of Groningen, PO-Box 30.001, 9700 RB Groningen, The Netherlands. |
| Spijkervet FK | Oral and Maxillofacial Surgery, University Medical Center Groningen, University of Groningen, PO-Box 30.001, 9700 RB Groningen, The Netherlands. |
| van Woerkom JM | Department of Rheumatology & Clinical Immunology, F 02.127, University Medical Center, PO Box 85500, 3508 GA Utrecht, The Netherlands. |