15 percent of 600,000 angioplasties were unwarranted or appeared to lack medical benefit. A study published by Dr. Gregory J. Dehmer, a professor of medicine at Texas A&M University,

15 percent of 600,000 angioplasties were unwarranted or appeared to lack medical benefit. A study published by Dr. Gregory J. Dehmer, a professor of medicine at Texas A&M University,