Abstract

References
1.
Ansell
B M
. (1959 ) Bulletin on Rheumatic Diseases
9 , 189 .
2.
(1964 ) Excerpta Medica International Congress Series
61 , 233 .
3.
Bywaters
E G L
. (1971 ) Annals of the Rheumatic Diseases
30 , 121 .
4.
Fabricant
M S
Chandor
S B
Friour
G J
. (1973 ) Journal of the American Medical Association
225 , 273 .
