Fig. 1From: Effect of exogenous estrogens and progestogens on the course of migraine during reproductive age: a consensus statement by the European Headache Federation (EHF) and the European Society of Contraception and Reproductive Health (ESCRH)Flow-chart for the systematic review. Search string: “migraine AND (hormone OR estrog* OR progest* OR contracept*)”. Date: 23-Oct-2017Back to article page