海量图书期刊资源,随时随地畅享阅读乐趣
Randomised evaluation of a prototype suction fetal scalp electrodeMichael Geary · 1997
A nonpenetrating fetal scalp electrodeG. Justus Hofmeyr; V. Cheryl Nikodem; A. Metin Gülmezoǧlu; Anthony E. Bunn · 1993