Imaging the cannabinoid CB1 receptor in humans with [11C]OMAR: Test-retest reproducibility and gender differences. - Marc D. Normandin; Ming-Qiang Zheng; Jim Ropchan; David Labaree; Soheila Najafzadeh; Rachel Hull; Wei Qian; Shannan Henry; Wendol A. Williams; Richard E. Carson; Yiyun Huang; Alexander Neumeister (NeuroImage, 2010)