[Is natural progesterone the drug choice in the primary prevention of premature labor?].
Fonseca
E B
EB
D005260:Female; D006801:Humans; D007752:Obstetric Labor, Premature / Q000517:prevention & control*; D011247:Pregnancy; D011374:Progesterone / Q000008:administration & dosage / Q000627:therapeutic use*
D011374:Progesterone