Abstract

References
1.
Dixon
A St J
Lience
E
(1961 ) Ann. rheum. Dis.
20 , 247 .
2.
Hart
F D
(1955 ) Ann. rheum. Dis.
14 , 77 .
3.
Lawrence
J S
(1963 ) Brit. J. clin. Pract.
17 , 699 .
4.
Rosenthal
S H
Lidsky
M D
Sharp
J T
(1968 ) J. Amer. med. Ass.
206 , 2893 .
5.
Sharp
J
Purser
D W
Lawrence
J S
(1958 ) Ann. rheum. Dis.
17 , 303 .
6.
Stanworth
A
Sharp
J
(1956 ) Ann. rheum. Dis.
15 , 140 .
7.
Wilkinson
M
Bywaters
E G L
(1958 ) Ann. rheum. Dis.
17 , 209 .
