[The trace elements copper and zinc in pregnancy].
Liu
X H
XH
Zhang
G Y
GY
Wu
B L
BL
D003300:Copper / Q000378:metabolism*; D005260:Female; D006801:Humans; D011247:Pregnancy / Q000378:metabolism*; D015032:Zinc / Q000378:metabolism*
D003300:Copper; D015032:Zinc