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