Table 5.

The occurrence of decoction time.

Decoction time	Occurrence	Reference
<30 min	7	Wen et al. [42]
1-2 h	15	Chen et al. [43]
2-2.5 h	4	Luo and Zhang [44]
3 h	2	Fu [45]
>3 h	4	Tan et al. [46]