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PDS.3743
PDS.3743
http://dx.doi.org/10.1002/PDS.3743
Beginning and duration of pregnancy in automated health care databases: review of estimation methods and validation results.
P356
Q38334947-A3C2A240-BD6C-4EBB-AC4D-7418FA2759CB
P356
PDS.3743
http://dx.doi.org/10.1002/PDS.3743