Luyckx, AS., Gaspard, UJ., Romus, MA., Grigorescu, F., De Meyts, P., & Lefebvre, PJ. (1986). Carbohydrate-metabolism in Women Who Used Oral-contraceptives Containing Levonorgestrel Or Desogestrel - a 6-month Prospective-study. Fertility and Sterility, 45(5), 635-642. https://hdl.handle.net/2078.5/65114 (Original work published 1986)