Johannes J (Hans)  Rasker, rheumatologist, is a professor (em) at the University of Twente,  Enschede, The Netherlands. He studied at the University of Leiden and Zürich (Switzerland)  and specialized in Groningen and Bath (UK). He was a consultant rheumatologist in at MST Hospital, Enschede. In addition to other committees, he was Secretary General of ILAR (the International League of Rheumatology). He is an author of more than 700 articles and chapters in international journals in many fields of rheumatology, including long-term follow-up studies on RA, psychosocial aspects, physiotherapy, complementary medicine, fibromyalgia, and the philosophy of diseases and medical ethics. He has been an associate editor and member of many rheumatological journals  He is an Honorary Member of the Dutch Society for Rheumatology and a Knight in the order of Oranje-Nassau.