FrontMatter -- Reviewers -- Acknowledgments -- Contents -- Abstract -- Summary -- 1 Introduction -- 2 Determination of the Immunization Schedule -- 3 Existing Data Sources and Systems -- 4 Stakeholder Concerns Related to the Safety of the Immunization Schedule -- 5 Review of Scientific Findings -- 6 Methodological Approaches to Studying Health Outcomes Associated with the Current Immunization Schedule: Options, Feasibility, Ethical Issues, and Priorities -- 7 Conclusions and Recommendations -- Appendix A: 2012 Advisory Committee on Immunization Practices' Recommended Immunization Schedule for Children -- Appendix B: Glossary -- Appendix C: Acronyms -- Appendix D: Study Designs for the Safety Evaluation of Different Childhood Immunization Schedules--Martin Kulldorff -- Appendix E: Agendas of Public Meetings Held by the Committee -- Appendix F: Biographical Sketches of Committee Members -- Appendix G: Institute of Medicine Publications on Vaccines.