karin

• Dr . karin b . michels , of harvard medical school , and her associates conducted a study that included 582 breast cancer patients plus a comparison group of 1 , 569 healthy " controls , " who were enrolled in the nurses " health study and the nurses " health study ii
  据路透社3月27日报道，美国哈佛大学医学院的卡琳米歇尔斯博士和她的同事进行的这项研究，涉及582名乳腺癌患者和1569名健康女性。