@article {9784,
	title = {An Unconditioned Stimulus Retrieval Extinction Procedure to Prevent the Return of Fear Memory},
	journal = {Biological Psychiatry},
	year = {2014},
	doi = {10.1016/j.biopsych.2014.03.027},
	author = {Jianfeng Liu and Liyan Zhao and Yanxue Xue and Jie Shi and Lin Suo and Yixiao Luo and Baisheng Chai and Chang Yang and Qin Fang and Yan Zhang and Yanping Bao and Charles L. Pickens and Lin Lu}
}
