Abstract

References
1.
Lowenstein
O
(1956 ) Brit. med. Bull . 12 , 110 , 114
2.
Lowenstein
O
Osborne
M P
Wersäll
J
(1964 ) Proc. roy. Soc. Ser. B
160 , 1
3.
Friedmann
I
(1963 ) Triangle (En.)
6 , 74
4.
Friedmann
I
Cawtborne
T
Bird
E S
(1965a ) J. Ultrastruct. Res . 12 , 92
5.
Friedmann
I
Cawtborne
T
Bird
E S
(1965b ) Nature, Lond . (in press)
6.
Hilding
D A
House
W F
(1964 ) Laryngoscope, St Louis
74 , 1135
7.
Luse
S A
(1960 ) Neurology
10 , 881
8.
Raimondi
A
Mullan
S
Evans
J P
(1962 ) J. Neurosurg . 19 , 731
