Merki-Feld, G. S., Imthurn, B., Langner, R., Seifert, B., & Gantenbein, A. R. (2015). Positive effects of the progestin desogestrel 75 μg on migraine frequency and use of acute medication are sustained over a treatment period of 180 days. J Headache Pain.

Merki-Feld, Gabriele S., Bruno Imthurn, Ronald Langner, Burkhardt Seifert, ja Andreas R. Gantenbein. "Positive Effects of the Progestin Desogestrel 75 μg On Migraine Frequency and Use of Acute Medication Are Sustained Over a Treatment Period of 180 Days." J Headache Pain 2015.

Merki-Feld, Gabriele S., et al. "Positive Effects of the Progestin Desogestrel 75 μg On Migraine Frequency and Use of Acute Medication Are Sustained Over a Treatment Period of 180 Days." J Headache Pain 2015.