Study flowchart and sample screening process. a Screening process for 1538 study participants. b Selection of groups with distinct control effects based on quartiles. CYL, cylinder; SE, spherical ...
Credit must be given to the creator. Only noncommercial uses of the work are permitted. No derivatives or adaptations of the work are permitted.
Some results have been hidden because they may be inaccessible to you
Show inaccessible results
Feedback