Increase of ectopic pregnancy in Finland--combination of time and cohort effects.
Marchbanks
P A
PA
Annegers
J F
JF
Coulam
C B
CB
D015331:Cohort Studies; D005260:Female; D005387:Finland; D006801:Humans; D011247:Pregnancy; D011271:Pregnancy, Ectopic / Q000453:epidemiology* / Q000209:etiology