Abstract

References
1.
Barber
G W
Spaeth
G L
. (1967 ) Lancet
i , 337
2.
Carey
M C
Donovan
D E
FitzGerald
O
McAuley
F D
. (1968 ) Amer. J. Med.
45 , 26
3.
Perry
T L
Hansen
S
Love
D L
Crawford
L E
Tischler
B
. (1968 ) Lancet
ii , 474
