Pregnancy outcome in natural family planning users: Cohort and case-control studies evaluating safety

J. L. Simpson, R. H. Gray, A. Perez, P. Mena, M. Barbato, E. E. Castilla, R. T. Kambic, F. Pardo, G. Tagliabue, W. S. Stephenson, A. Bitto, C. Li, V. H. Jennings, J. M. Spieler, J. T. Queenan

Research output: Contribution to journal › Article › peer-review