Length and variation in the menstrual cycle—a cross‐sectional study from a Danish countyKirstine Münster, Peter J. Helm, Lone Schmidt|BJOG An International Journal of Obstetrics & Gynaecology|1992Cited by 196
Infertility and the seeking of infertility treatment in a representative populationLone Schmidt, Peter J. Helm, Kirstine Münster|BJOG An International Journal of Obstetrics & Gynaecology|1995Cited by 142
Infertility, involuntary infecundity, and the seeking of medical advice in industrialized countries 1970-1992: a review of concepts, measurements and resultsLone Schmidt, Kirstine Münster|Human Reproduction|1995Cited by 86
Secondary amenorrhoea: prevalence and medical contact—a cross–sectional study from a Danish countyKirstine Münster, Lone Schmidt, Peter J. Helm|BJOG An International Journal of Obstetrics & Gynaecology|1992Cited by 68
Recalled menarche in relation to infertility and adult weight and heightPeter J. Helm, Lone Schmidt, Kirstine Münster|Acta Obstetricia Et Gynecologica Scandinavica|1995Cited by 39