| Research |
Pulish Year |
Type |
Factors |
Level |
| Li Mingzhou [62] |
2007 |
RCT |
① (−2) ⑤ (+1) ⑥ (+1) |
H |
| Wei Lijun [63] |
1998 |
CR |
① (−1) ⑤ (+1) ⑥ (+1) |
M |
| Jin Tianfu [64] |
2005 |
CR |
⑤ (+1) |
M |
| Liu XiuFeng [65] |
2004 |
CT |
① (−2) ③ (−1) ⑤ (+1) ⑥ (+1) |
M |
| Fan Dongxian [66] |
2004 |
CR |
① (−1) ⑤ (+1) |
L |
| Ji Zhaofang [67] |
2011 |
RCT |
① (−2) ③ (−1) ⑤ (+1) |
L |