Bibliography (5):

1. ​ Modafinil

2. https://clinicaltrials.gov/study/NCT01684306

3. https://classic.clinicaltrials.gov/ct2/show/NCT01684306

4. Wikipedia Bibliography:

   1. Statistical-significance

   2. https://en.wikipedia.org/wiki/ClinicalTrials.gov  :

      https://en.wikipedia.org/wiki/ClinicalTrials.gov