Three theories were put forward by some researcher. 1 low nutrition and low calcium 2 free radical 3 magnesium theory.

最近有学者指出地氟病的发病机制主要有以下三方面学说：1低营养低钙学说，2自由基学说，3镁学说。

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Strategy no. 3 Products: Leverage customer insights to stimulate radical innovation.

策略3 Products(产品)：利用消费者内在需求刺激根本性革新。

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By reoperation, part of patients with relapse in situ, hepatic metastasis, lung metastasis got radical excision with ideal 3, 5 years of survival rate.

大肠癌术后原位复发、肝转移、肺转移通过两次手术，部分复发病人获得根治切除，其3、5年生存率较为理想。

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Get America Working is pushing a radical proposal to eliminate, or at least reduce, the 15.3% payroll tax, in order to boost employment.

FORBES: Motivated to Work