This makes fascinating reading. The Southern California Society for Psychical Research, an independent group, in 1984 investigated the famous Natuzza Evolo, a renowned Italian mystic, healer and stigmatic. Although not a full scientific investigation, some of the team were amazed and found no evidence of fraud or any reason to doubt her abilities.
http://www.scribd.com/doc/23650855/Natuzza-Evolo-Psychogenic-Phenomena-by-Michael-Nanko