Preventing prematurity in twins.
D005260:Female; D005859:Germany, East; D005860:Germany, West; D006801:Humans; D007231:Infant, Newborn; D007752:Obstetric Labor, Premature / Q000517:prevention & control*; D011247:Pregnancy; D011272:Pregnancy, Multiple / Q000187:drug effects*; D013566:Sympathomimetics / Q000627:therapeutic use*
D013566:Sympathomimetics