38-63
55-69
39-57
70-75
74-82
23-33
78-93
24-37
revisiones sistemáticas
22-38
9-14
7-10
50-62
12-23
11-13
14-22
69-74
57-72
13-34
102-112
10-25
78-80
32-48
58-82
11-12
55-72