They add that doctors should be very careful when deciding to give the treatments to patients.

他们还表示，在决定对患者进行大麻治疗时，医生应该小心行事。

Given weak evidence of its effectiveness and the high prices, doctors and insurers have not given the treatment to patients.

由于缺乏证据证明其有效性和高昂的价格，医生和保险公司没有向患者提供这种治疗方法。