A1H NMR-based metabonomic study on the SAMP8 and SAMR1 mice and the effect of electro-acupuncture - Qiao-feng, Wu; Ling-ling, Guo; Shu-guang, Yu; Qi, Zhang; Sheng-feng, Lu; Fang, Zeng; Hai-yan, Yin; Yong, Tang; Xian-zhong, Yan (Experimental Gerontology, 2011)