Abstract
References
1.
Foerster
O
. (1933 ) Brain
56 , 1
2.
Head
H
. (1893 ) Brain
16 , 1
3.
Head
H
. (1894 ) Brain
17 , 339
4.
Head
H
. (1905 ) Brain
28 , 99
5.
Hockaday
J M
Whitty
C W M
. (1967 ) Brain
90 , 481
6.
Kellgren
J H
. (1938 ) Clin. Sci.
3 , 175
7.
Kellgren
J H
. (1939 ) Clin. Sci.
4 , 35
8.
Lewis
T
. (1942 ) Pain . New York