Abstract
References
1.British Medical Journal (1977 ) i , 1120
2.
Hill F H
(1977 ) Seminars in Arthritis and Rheumatism 6 , 361
3.
Katona G
,
Ortega E
, &
Robles-Gill J
(1971 ) Clinical Trials Journal 4 , 3
4.
Ropes M W
,
Bennet G A
,
Cobb C
,
Jacox R
, &
Jessar R A
(1959 ) Annals of the Rheumatic Diseases 18 , 49