(P31)	(Q13442814)
(P304)	1823-7
(P407)	(Q1860)
(P433)	12
(P478)	259
(P577)	Friday, March 25, 1988
(P1433)	(Q1470970)
(P1476)	"Risk factors for ectopic pregnancy. A population-based study" (language: en)
(P2093)	P A Marchbanks (P1545) 1 J F Annegers (P1545) 2 C B Coulam (P1545) 3 J H Strathy (P1545) 4 L T Kurland (P1545) 5

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