article 2001 Estrogen ‘add‐back’ and lipid profile during GnRH agonist (triptorelin) therapy International Journal of Gynecology & Obstetrics ·doi:10.1016/s0020-7292(01)00379-4
article 1999 Estrogen and lipid profile in patients with endometriosis treated by GnRH agonist International Journal of Gynecology & Obstetrics ·doi:10.1016/s0020-7292(99)00064-8