Ren, W., Mi, D., Yang, K., Cao, N., Tian, J., Li, Z., & Ma, B. (2013). The expression of hypoxia-inducible factor-1α and its clinical significance in lung cancer: a systematic review and meta-analysis. Swiss Medical Weekly, 143(3536), w13855. https://doi.org/10.4414/smw.2013.13855