cialis 20 mg Data for comparative biomarkers on this series have been published ER 23, 24, PR 23, 25, HER2 23, 26, CK5 6 23, EGFR 23, Ki67 27, PD 1 and PD L1 28 Refer to Supplemental Table A for antibody clones and scoring criteria and tumor infiltrating lymphocytes as assessed on hematoxylin and eosin slides using standardized methods 20