Abstract

References
1.
Billig
H E
Jr
Spaulding
C A
Jr
(1947 ) Industrial Medicine
16 , 336 .
2.
Cumings
J N
. (ed) (1973 ) Background to Migraine, 5th Symposium . Heinemann , London (in press).
3.
Dalton
K
. (1960 ) Lancet
i , 198 ;.
4.
Dalton
K
. (1972 ) Headache
12 , 151 –159 .
5.
Hanington
E
. (1967 ) British Medical Journal
ii , 550 .
6.
Harper
H A
. (1969 ) Review of Physiological Chemistry . 12th edn . Lange Medical , Los Altos, California .
7.
Hockaday
J M
Williamson
H
Alberti
G
. (1973 ) In:
Cumings
(1973).
8.
Johansson
E D B
. (1971 ) Acta endocrinologica (København)
68 , 779 .
9.
Pearce
J
Ron
M A
De Silva
K L
. (1973 ) In:
Cumings
(1973).
10.
Sjaastad
O
Stensrud
P
. (1971 ) Acta neurologica Scandinavica
47 , 120 .
11.
Smith
I
Kellow
A H
Mullen
P E
Hanington
E
. (1971 ) Nature (London)
230 , 246 .
12.
Wilkinson
M
. (1969 ) Lancet
ii , 430 .
13.
Youdim
M B H
Carter
S B
Sandler
M
Hanington
E
Wilkinson
M
. (1971 ) Nature (London)
230 , 127 .
