ACE2 and cancer: Survival analysis depicts that higher expression of ACE2 is directly associated with the overall survival of the patients in KIRP, PCPG, LUSC, ACC, LIHC, SARC, STAD, PRAD, UCS, OV, COAD, UCEC, THYM, BLCA, MESO, CESC, KIRC, UVM, READ, CHOL, and HNSC cancers.