The content of the website is based on available guidelines on preconception and prenatal care. We searched in PubMed, Cochrane, Web of Science, Google, and Google Scholar using the following keywords: guideline(s), preconception, preconception care, preconception health, prepregnancy, before pregnancy, and before conception. We also visited international and national websites of professional organizations providing guidelines. Few guidelines on preconception care in healthy women were available. Some of the prenatal guidelines included information on the periconceptional phase, and some issues of the prenatal guidelines were relevant for preconception care as well. The guidelines perused were national guidelines from Domus Medica (Association of General Practitioners) (5) and KCE (Federal Centre of Knowledge for Public Health) (6), as well as international guidelines from CDC (www.cdc.gov/ncbddd/folicacid/recommendations.html), NHG (7), AJOG (8), ICSI (9), and NICE (10). The quality of the guidelines was assessed by three authors by means of AGREE II (the Appraisal of Guidelines for Research and Evaluation instrument is recognized as the gold standard for practice guidelines evaluation) (11).