[The use of a natural smooth muscle relaxant factor in the antispastic therapy of threatened abortion].
GRASSI
G
G
D000028:Abortion, Induced / Q000517:prevention & control*; D000022:Abortion, Spontaneous; D000033:Abortion, Threatened; D005260:Female; D006801:Humans; D009130:Muscle, Smooth; D011247:Pregnancy
ABORTION/prevention and control