Targeted Searching using Term Variants (Wildcards) – All Databases

(adolescents or young adults or teenagers).ti,ab. [Example 1: Variations added and qualified]
(adhd or Attention Deficit Hyperactivity Disorder).ti,ab.
(ritalin or concerta or daytrana or equasym or methylphenidate).ti,ab.
(adverse effects or adverse events or untoward effects or side effects).ti,ab.
1 and 2 and 3 and 4
(infant or infants or child or children or preschool or pre school).ti,ab.
5 not 6
(migraine or migraines or sick headache or sick headaches or status migrainosus).ti,ab,kf. [Example 2: What is the question?]
(acupuncture therapy or acupuncture treatment or acupuncture analgesia or ear acupuncture or electroacupuncture or meridians or acupuncture points or moxibustion).ti,ab,kf. 
(randomized controlled trial or randomized controlled trials or randomised controlled trial or randomised controlled trials).ti,ab,kf.
8 and 9 and 10