Markedly elevated beta-hCG levels in a normal singleton gestation with hyperreactio luteinalis.
Bidus MA, Ries A, Magann EF, Martin JN. Markedly elevated beta-hCG levels in a normal singleton gestation with hyperreactio luteinalis. Obstet Gynecol. 2002 May; 99(5 Pt 2):958-61.