title: Letter: Management of threatened abortion.
mesh_terms: D000033:Abortion, Threatened / Q000517:prevention & control*; D000328:Adult; D005260:Female; D006801:Humans; D007037:Hypothyroidism / Q000188:drug therapy*; D011247:Pregnancy; D011248:Pregnancy Complications / Q000188:drug therapy; D013974:Thyroxine / Q000627:therapeutic use*
chemical_list: D013974:Thyroxine