TY - RPRT TI - Changes in multiple or sequential estrogen receptor determinations in breast cancer. AU - J C Allegra AU - A Barlock AU - K K Huff AU - M E Lippman PY - 1980 DO - 10.1002/1097-0142(19800215)45:4<792::aid-cncr2820450430>3.0.co;2-x UR - https://pubmed.ncbi.nlm.nih.gov/7357496/ ID - 7357496 ER -