title: Increased levothyroxine requirements in pregnancy--why, when, and how much?
authors.forename: Anthony
authors.initials: A
authors.lastname: Toft
mesh_terms: D005260:Female; D006801:Humans; D007037:Hypothyroidism / Q000188:drug therapy*; D011247:Pregnancy; D011248:Pregnancy Complications / Q000188:drug therapy*; D013972:Thyrotropin / Q000097:blood; D013974:Thyroxine / Q000008:administration & dosage*
chemical_list: D013972:Thyrotropin; D013974:Thyroxine