The OPT
Video
Instructions
Research
10
20
30
40
50
60
70
80
90
100
Keeping you alive
10
20
30
40
50
60
70
80
90
100
Maintaining independence
10
20
30
40
50
60
70
80
90
100
Reducing pain
10
20
30
40
50
60
70
80
90
100
Reducing other symptoms