Die Kur - Kraft für Körper, Seele und den Alltag

2000, Long-term efficacy of radon spa therapy in rheumatoid arthritis-a randomized, sham-controlled study and follow up.

Franke A, Reiner L, Pratzel HG, Franke T, Resch K-L

Rheumatology (Oxford) 2000; 39:894-902