As I'm sure you know, there is a difference between treatments which have, or may have, an overall positive effect for most people and for the average, and the possibility, which is not included in those statistics, that treatment actually has a negative effective for some.

Of the articles on the list that I posted, the authors of the first were from Australia, the second from Germany, the third appears to be from Britain, and the fourth was PC's John Grohol, from the USA I think.