由于肉眼检查不能识别某些皮肤变色和皮肤癌，诊所的皮肤科医生需要对病人的皮肤组织进行测试。
Because visual inspection cannot reliably distinguish certain skin discolorations from skin cancers, dermatologists at clinics have needed to perform tests of skin tissue taken from patients.
在测试此产品前，宝洁公司咨询了包括格里菲斯在内的8位皮肤科医生组成的专家组，询问需要何种证据来证明产品功效。
Before testing the resulting product, the firm consulted a panel of eight dermatologists, including Griffiths, and asked them what evidence they would need to be convinced that it worked.
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