title: Psychogenic factors in hyperemesis gravidarum.
authors.forename: P T
authors.initials: PT
authors.lastname: Tsoi
authors.forename: R K
authors.initials: RK
authors.lastname: Chin
authors.forename: A M
authors.initials: AM
authors.lastname: Chang
mesh_terms: D001294:Attitude to Health; D005260:Female; D006723:Hong Kong; D006801:Humans; D006939:Hyperemesis Gravidarum / Q000523:psychology*; D011247:Pregnancy; D012959:Socioeconomic Factors; D013315:Stress, Psychological