We think that means that those groups had truly been very careful in their work, despite their inability to convince some skeptics of that. (dotearth.blogs.nytimes.com)
This one was written by a medical doctor to convince skeptics about the power of the mind - body connection. (melissatorio.com)
Self - reported reader results don't convince skeptics because they are an incomplete and biased sample. (perfecthealthdiet.com)