Stem cell therapy wasn't unfair help for baseball star
Disputed Treatment Used in Bartolo Colon's Comeback - The New York Times
What Is the Mysterious Stem-Cell Treatment That Saved Bartolo Colon's Career?
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MLB Investigating Bartolo Colon's Stem-Cell Treatment - TV - Vulture
Lawrence Journal-World 042415 by Lawrence Journal-World - Issuu
May 12, 2011 New York Post
Doctor Defends Stem Cell Procedure On Yankees' Bartolo Colon - CBS New York