国际分期中Tis代表()
A.原发肿瘤<1cm
B.原发肿瘤<3cm
C.原位癌
D.浸润性癌
E.原发肿瘤不能评价
参考答案:E
解析:原发肿瘤不能评价。
—Would you like tea or coffee?
— , thank you. I’ve just had some water.
A.Either
B.Both
C.Any
D.Neither
下列偏倚不属于选择偏倚的是()
A.住院偏倚
B.存活病例偏倚
C.转诊偏倚
D.测量偏倚
E.无应答偏倚