title: Sequential aspects of spontaneous abortion: maternal age, parity, and pregnancy compensation artifact.
mesh_terms: D000022:Abortion, Spontaneous; D000293:Adolescent; D000328:Adult; D002648:Child; D005006:Ethnicity; D005260:Female; D006801:Humans; D008423:Maternal Age; D008875:Middle Aged; D010298:Parity; D011247:Pregnancy; D012306:Risk; D014481:United States