Abstract

References
1.
Hendricks
C. H.
(1955 ) Obstet. & Gynec., N.Y. , 6 , 592 .
2.
Laurence
K. M.
(1959 ) Arch. Dis. Childh. , 34 , 36 .
3.
Magnus
R.
(1924 ) Körperstellung . Berlin .
4.
Sherrington
C. S.
(1948 ) The Integrative Action of the Nervous System . New Haven .
