1. The treatment of the nausea and vomiting of pregnancy;Reid;N Engl J Med,1938
2. Jiang HG, Elixhauser A, Nicholas J, et al. Care of women in U.S. hospitals, 2000. Rockville (MD): Agency for Healthcare Research and Quality, 2002 HCUP Fact Book No. 3. AHRQ Pub. No. 02-0044.
3. A prospective study of nausea and vomiting during pregnancy;Gadsby;Br J Gen Pract,1993
4. Comparison of serum pituitary thyrotropin and chorionic gonadotropin throughout pregnancy;Braunstein;J Clin Endocrinol Metab,1976
5. Thyrotropic action of human chorionic gonadotropin;Yoshimura;Thyroid,1995