Create a clinical question based on your Learning Contract, using the PICO structure. Also, clearly sketch out the elements of the clinical question in relation to PICO format as demonstrated in table 5.1. & 5.2. Then, using the above PICO question, you are required to list the key words used to undertake the search, the rationale for the choice of words (why where these words chosen), the number of articles retrieved for each key word and the filtering processes used (including Boolean operators, truncation, combined phrase search etc.) as to reduce the articles to a manageable number.