No, you are not riendly!  You jump in just like that from nowehere to make meaningless edits. 
 Go away and bother somebody else.  I made a good faith public service addition to an important health problem in excellent english and I stand by my stylistic choices regarding in-line references to external sources.  It is people like you that annoy the hell out of volunteers like me that think that just because you have "barnstars" you own Wikipedia and you have the right to jump on contributions from others without adding any value whatsoever, like a dog peeing on trees to mark their territory.  Thanks to annoying people like you I, and many others, progressively tend to add less and less material to Wikipedia because every time we get stomped-on by barnstar-weilding folks like you. (Ask Jimmy Wales, the stats speak for themselves.)