Andy Pettitte Admits to Using Human Growth Hormone (HGH)
First Person: Pettitte Apologizes for HGH Use
Andy Pettitte Testifies That Roger Clemens Said He Used H.G.H. - The New York Times
Pettitte admits using HGH to recover from an elbow injury in 2002 - ESPN
Andy Pettitte Admits to Using Human Growth Hormone (HGH)
Andy Pettitte: Andy Pettitte's 2007 take on PED use: I tried HGH. Though it was not against baseball rules, I was not comfortable with what I was doing
First Person: Pettitte Apologizes for HGH Use
Andy Pettitte says he didn't use HGH for performance advantage - Los Angeles Times
First Person: Pettitte Apologizes for HGH Use
Pettitte says he used HGH supplied by father in 2004 - ESPN