Sleeve gastrectomy ameliorated high-fat diet (HFD)-induced non-alcoholic fatty liver disease and upregulated the nicotinamide adenine dinucleotide +/ Sirtuin-1 pathway in mice. - Hua R; Wang GZ; Shen QW; Yang YP; Wang M; Wu M; Shao YK; He M; Zang Y; Yao QY; Zhang ZY (Asian journal of surgery, 2021)