When searching for a magazine article on heroics, this "article" popped up in my results. As you can see, it's not a full article but someone's letter to the editor. Even if the information is true, this would not be considered a quality source to cite in an academic paper.
It might be tempting to say "but the author is a nursing student, so she must know something about the topic," but again, it's the article itself - which is not a true article - that we should be paying attention to. No matter how qualified the author, letters to the editor are not high quality academic sources.
It doesn't hurt to look up more information on this source, Nursing Standard, so I Googled nursing standard wiki. While this magazine does contain peer-reviewed articles, it's still a magazine and not an academic journal.