Answer: No. Often, you will simply search for the P & I, or P & O. Depending on the amount of literature, you may find that your results are too small if you search for P, I and O.
Please review the following content prior to our class together Sept 17th
1) Search strategies: http://guides.library.ubc.ca/tutorial-lfs/search_strategies
2) Medline (Ovid) - ~20 minutes of videos
This content will be used in class for a graded iClicker quiz at the beginning of class and for FNH 398 Assignment 1.