American society of clinical oncology/college of american pathologists guideline recommendations for immunohistochemical testing of estrogen and progesterone receptors in breast cancer
1 Intermountain Healthcare, University of Utah School of Medicine, Salt Lake City, UT; University of Michigan Comprehensive Cancer Center, University of Michigan Health System, Ann Arbor, MI; Sidney Kimmel Comprehensive Cancer Center at Johns Hopkins, Baltimore, MD; and American Society of Clinical Oncology, Alexandria, VA.
ASCO and CAP collaborated to produce an evidence-based guideline on estrogen and progesterone receptor testing in breast cancer to produce optimal testing performance.