Acetylsalicylic acid Not Yet Recruiting Phase 2 Trials for Stage I Prostate Cancer AJCC v8 / Stage IIIC Prostate Cancer AJCC v8 / Stage IIIA Prostate Cancer AJCC v8 / Adenocarcinoma, Prostate / Stage III Prostate Cancer AJCC v8 / Stage IIIB Prostate Cancer AJCC v8 / Stage IIC Prostate Cancer AJCC v8 / Stage IIA Prostate Cancer AJCC v8 / Stage II Prostate Cancer AJCC v8 / Stage IIB Prostate Cancer AJCC v8 Treatment