Abstract
References
1.
Eversden
I D
, (1970 ) Scandinavica Medical and Biological Engineering
8 , 159 –164
2.
Jeppsson
S
, (1964 ) Acta chirurgica Scandinavica
128 , 218 –224
3.
Lundberg
N
, (1960 ) Acta psychiatrica et neurologica Scandinavica
Suppl. 149 , 36
4.
Richardson
A
Hide
T A H
Eversden
I D
, (1970 ) Lancet
ii , 687 –689