[HEINOLA, FINLAND--MARCH 1964].
D001168:Arthritis; D001172:Arthritis, Rheumatoid; D005387:Finland; D006761:Hospitals; D006801:Humans; D012216:Rheumatic Diseases; D013514:Surgical Procedures, Operative
ARTHRITIS, RHEUMATOID; FINLAND; HOSPITALS; RHEUMATISM; SURGERY, OPERATIVE
HEINOLA, FINLAND--MARTS 1964.