Multi-Institutional Study of Pathologist Reading of the Programmed Cell Death Ligand-1 Combined Positive Score Immunohistochemistry Assay for Gastric or Gastroesophageal Junction Cancer

Aileen I. Fernandez, Charles T. Robbins, Patricia Gaule, Diana Agostini‐Vulaj, Robert A. Anders, Andrew M. Bellizzi, Wei Chen, Zongming Eric Chen, Purva Gopal, Lei Zhao, Mikhail Lisovsky, Xiuli Liu, Jinru Shia, Huamin Wang, Zhaohai Yang, Leena McCann, Yvonne G. Y. Chan, Jodi Weidler, Michael Bates, Xuchen Zhang, David L. Rimm