00431nas a2200181   4500000000100000000000100001008004100002100001400043700001200057700001200069700001500081700001300096700001600109245009000125300001300215490000700228022001400235       2018                            d1 aA. Matcho1 aP. Ryan1 aD. Fife1 aD. Gifkins1 aC. Knoll1 aA. Friedman00aInferring pregnancy episodes and outcomes within a network of observational databases  ae01920330 v13  a1932-6203