1. Atrash HK, Johnson K, Adams M, Cordero JF, Howse J. Preconception Care for Improving Perinatal Outcomes: The Time to Act. Matern Child Health J. 2006;10:S3–11.
2. Johnson K, Posner SF, Biermann J, Cordero JF, Atrash HK, Parker CS, Boulet S, Curtis MG, CDC/ATSDR Preconception Care Work Group, Select Panel on Preconception Care. Recommendations to improve preconception health and health care--United States. A report of the CDC/ATSDR Preconception Care Work Group and the Select Panel on Preconception Care. MMWR Recomm Rep. 2006;55:1–23.
3. Lu MC. Recommendations for preconception care. Am Fam Physician. 2007;76;397-400.
4. de Weerd S, Steegers EA. The past and present practices and continuing controversies of preconception care. Community Genet. 2002;5:50–60. doi:64631.
5. Health Council of the Netherlands. Preconception Care: A Good Beginning. 2007.