title: [Quantification of morning sickness].
authors.forename: Jone
authors.initials: J
authors.lastname: Trovik
authors.forename: Åse
authors.initials: Å
authors.lastname: Vikanes
mesh_terms: D005260:Female; D006801:Humans; D048968:Morning Sickness / Q000175:diagnosis / Q000453:epidemiology; D011247:Pregnancy; D011795:Surveys and Questionnaires