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	1.	Treatment of vascular smooth muscle cells with estradiol and beta-adrenergic agonists has an additive effect on cAMP levels, but no additive effect on inhibition of collagen synthesis. [electronic resource] by Dimopoulos, George J Langner, Ronald O Producer: 20060911 In: The Journal of pharmacy and pharmacology vol. 57 Online resources: Available from publisher's website Availability: No items available. Save to lists Add to cart (remove)
	2.	Inhibition of phosphodiesterase has an additive effect on estrogen's ability to inhibit collagen synthesis in vascular smooth muscle cells. [electronic resource] by Dimopoulos, George J Langner, Ronald O Producer: 20090427 In: Vascular pharmacology vol. 50 Online resources: Available from publisher's website Availability: No items available. Save to lists Add to cart (remove)
	3.	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. [electronic resource] by Merki-Feld, Gabriele S Imthurn, Bruno Langner, Ronald Seifert, Burkhardt Gantenbein, Andreas R Producer: 20151201 In: The journal of headache and pain vol. 16 Online resources: Available from publisher's website Availability: No items available. Save to lists Add to cart (remove)
	4.	Headache frequency and intensity in female migraineurs using desogestrel-only contraception: a retrospective pilot diary study. [electronic resource] by Merki-Feld, Gabriele S Imthurn, Bruno Langner, Ronald Sándor, Peter S Gantenbein, Andreas R Producer: 20130906 In: Cephalalgia : an international journal of headache vol. 33 Online resources: Available from publisher's website Availability: No items available. Save to lists Add to cart (remove)