Pengaruh Flavonoid dari Propolis terhadap Kadar Glutation dan 8-Hidroksi-2-Deoksiguanosine (8-OHdG) pada Pasien Endometriosis dengan Terapi Implan Levonorgestrel = Effect of Flavonoids in Propolis on Glutathione and 8 Hydroxy-2-Deoxy Guanosine (8-OHdG) Level in Endometriosis Patients with Levonorgestrel Implant Therapy