Analysis of information sources in references of the Wikipedia article "非預期懷孕" in Chinese language version.
Which cites: * Logan C, Holcombe E, Manlove J, et al. The consequences of unintended childbearing: A white paper (PDF). Washington: Child Trends, Inc. May 2007. * Cheng D, Schwarz E, Douglas E, et al. Unintended pregnancy and associated maternal preconception, prenatal and postpartum behaviors. Contraception. March 2009, 79 (3): 194–8. PMID 19185672. doi:10.1016/j.contraception.2008.09.009. * Kost K, Landry D, Darroch J. Predicting maternal behaviors during pregnancy: Does intention status matter?. Fam Plann Perspectives. Mar–Apr 1998, 30 (2): 79–88. PMID 9561873. doi:10.2307/2991664. * D'Angelo, D, Colley Gilbert B, Rochat R; et al. Differences between mistimed and unwanted pregnancies among women who have live births. Perspect Sex Reprod Health. Sep–Oct 2004, 36 (5): 192–7. PMID 15519961. doi:10.1363/3619204.
Which cites: * Logan C, Holcombe E, Manlove J, et al. The consequences of unintended childbearing: A white paper (PDF). Washington: Child Trends, Inc. May 2007. * Cheng D, Schwarz E, Douglas E, et al. Unintended pregnancy and associated maternal preconception, prenatal and postpartum behaviors. Contraception. March 2009, 79 (3): 194–8. PMID 19185672. doi:10.1016/j.contraception.2008.09.009. * Kost K, Landry D, Darroch J. Predicting maternal behaviors during pregnancy: Does intention status matter?. Fam Plann Perspectives. Mar–Apr 1998, 30 (2): 79–88. PMID 9561873. doi:10.2307/2991664. * D'Angelo, D, Colley Gilbert B, Rochat R; et al. Differences between mistimed and unwanted pregnancies among women who have live births. Perspect Sex Reprod Health. Sep–Oct 2004, 36 (5): 192–7. PMID 15519961. doi:10.1363/3619204.
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标签用不同内容定义了多次Which cites: * Logan C, Holcombe E, Manlove J, et al. The consequences of unintended childbearing: A white paper (PDF). Washington: Child Trends, Inc. May 2007. * Cheng D, Schwarz E, Douglas E, et al. Unintended pregnancy and associated maternal preconception, prenatal and postpartum behaviors. Contraception. March 2009, 79 (3): 194–8. PMID 19185672. doi:10.1016/j.contraception.2008.09.009. * Kost K, Landry D, Darroch J. Predicting maternal behaviors during pregnancy: Does intention status matter?. Fam Plann Perspectives. Mar–Apr 1998, 30 (2): 79–88. PMID 9561873. doi:10.2307/2991664. * D'Angelo, D, Colley Gilbert B, Rochat R; et al. Differences between mistimed and unwanted pregnancies among women who have live births. Perspect Sex Reprod Health. Sep–Oct 2004, 36 (5): 192–7. PMID 15519961. doi:10.1363/3619204.
Which cites: * Logan C, Holcombe E, Manlove J, et al. The consequences of unintended childbearing: A white paper (PDF). Washington: Child Trends, Inc. May 2007. * Cheng D, Schwarz E, Douglas E, et al. Unintended pregnancy and associated maternal preconception, prenatal and postpartum behaviors. Contraception. March 2009, 79 (3): 194–8. PMID 19185672. doi:10.1016/j.contraception.2008.09.009. * Kost K, Landry D, Darroch J. Predicting maternal behaviors during pregnancy: Does intention status matter?. Fam Plann Perspectives. Mar–Apr 1998, 30 (2): 79–88. PMID 9561873. doi:10.2307/2991664. * D'Angelo, D, Colley Gilbert B, Rochat R; et al. Differences between mistimed and unwanted pregnancies among women who have live births. Perspect Sex Reprod Health. Sep–Oct 2004, 36 (5): 192–7. PMID 15519961. doi:10.1363/3619204.
<ref>
标签用不同内容定义了多次Which cites: * Logan C, Holcombe E, Manlove J, et al. The consequences of unintended childbearing: A white paper (PDF). Washington: Child Trends, Inc. May 2007. * Cheng D, Schwarz E, Douglas E, et al. Unintended pregnancy and associated maternal preconception, prenatal and postpartum behaviors. Contraception. March 2009, 79 (3): 194–8. PMID 19185672. doi:10.1016/j.contraception.2008.09.009. * Kost K, Landry D, Darroch J. Predicting maternal behaviors during pregnancy: Does intention status matter?. Fam Plann Perspectives. Mar–Apr 1998, 30 (2): 79–88. PMID 9561873. doi:10.2307/2991664. * D'Angelo, D, Colley Gilbert B, Rochat R; et al. Differences between mistimed and unwanted pregnancies among women who have live births. Perspect Sex Reprod Health. Sep–Oct 2004, 36 (5): 192–7. PMID 15519961. doi:10.1363/3619204.