1.
Rev. mex. anestesiol
; 7(3): 113-6, 1984.
Article
in Spanish
| LILACS
| ID: lil-25691
2.
Am J Obstet Gynecol
; 103(2): 244-52, 1969 Jan 15.
Article
in English
| MEDLINE
| ID: mdl-5773919