A review article is a careful and critical assessment of the existing literature on a particular topic that attempts to summarize the current state of understanding on the topic. Unlike a research article, a review article examines the evidence presented in other articles, rather than conducting experiments or undertaking research to produce evidence. In your article, you plan to evaluate the work that others have done on the topic. You are not conducting experiments yourself. Therefore, the article that you plan to write will be a review article.
Regarding your second question, it should be fine to list both your school and hospital in your affiliations. In fact, your affiliation with the hospital will strengthen your credibility as it will be clear that you have practical experience as well.