Hypoxic preconditioning of human urine-derived stem cell-laden small intestinal submucosa enhances wound healing potential. - Zhang, Xiu-Ru; Huang, Yi-Zhou; Gao, Hong-Wei; Jiang, Yan-Lin; Hu, Jun-Gen; Pi, Jin-Kui; Chen, An-Jing; Zhang, Yi; Zhou, Li; Xie, Hui-Qi (Stem Cell Research & Therapy, 2020)