GNRH1 and posterior cortical atrophy: The PCa-Exposure cohort included 5714 men diagnosed with PCa on/not on GnRH (exposed men) and 28,445 men without PCa (non-exposed men), whereas the GnRH-Exposure cohort included 692 men with on GnRH (exposed men) and 3460 men with PCa but not on GnRH (non-exposed men).