But the length of treatment depends on the problem.

但治疗时间的长度取决于问题本身。

The duration of treatment and length of the holiday are based on fracture risk and pharmacokinetics of the bisphosphonate used.

双磷酸盐的使用周期是以双磷酸盐的药理学作用，以及其骨折风险作为基础的。