[Grammar] Dear friends, can anybody help me correct this sentence?

[reza_elc87]

For most patients, application of PEMF in the second stage of menstrual cycle leads to relieve symptoms without need for any additional therapy.

 

[tedmc]

For most patients, the application of PEMF in the second stage of menstrual cycle [STRIKE]leads[/STRIKE] helps to relieve symptoms without the need for any additional therapy.

 

[teechar]

In addition to tedmc's suggestions above, I would say "their/the menstrual cycle."

 

[Tarheel]

I would say "tends" (to relieve symptoms) instead of "helps" (to relieve symptoms).