TI - TAmoxifen resistance PT - JOUR DP - 1999 TA - JAMA pages = {723}, VI - 282 IP - 8 AID - 10.1001/jama.282.8.723 [doi] 4100 - http://dx.doi.org/10.1001/jama.282.8.723 SO - JAMA August 25, 1999 282(8):723