On Doctoring MEDLINE searches, with reference librarian comments

The question was

"My search was to find evidence in articles
regarding the efficacy of short course antibiotics. The normal
course is ten days, but there is evidence that 5,3 or even 1 day
courses of antibiotics are as effective. My preceptor was
specifically interested in urinary tract infections, otitis, and
sinusitis."

1 :  exp *Antibiotics/ad,ae,tu [Administration & Dosage, Adverse         {20103}
Effects, Therapeutic Use]
2 :  exp *time factors/         {30}
3 :  exp *Sinusitis/dt [Drug Therapy]         {241}
4 :  limit 3 to (local holdings and human and english language)         {124}
5 :  limit 4 to (local holdings and human and english language)         {124}
6 :  exp *Urinary tract infections/dt [Drug Therapy]         {647}
7 :  limit 6 to (local holdings and human and english language)         {290}
8 :  1 and 7         {104}
9 :  1 and 4         {73}
10 :  2 and 8         {0}
11 :  2 and 9         {0}
12 :  exp *Antibiotics/ad         {4763}
13 :  *Drug administration schedule/         {45}
14 :  Drug administration schedule/         {18388}
15 :  12 and 14         {703}
16 :  exp *Otitis/dt [Drug Therapy]         {586}
17 :  15 and 16         {11}
18 :  15 and 3         {1}
19 :  15 and 6         {14}
20 :  17 or 18 or 19         {26}
21 :  from 20 keep 1-26         {26}
22 :  from 20 keep 1-26          { 26}

Reference Librarian comments

Obviously, you had a fine time with MEDLINE on this search. Good
Job. Congrats. You did most everything right.