He created a number of doping substances and methods, with a combination of testosterone, growth hormone and EPO being his most successful.
Ángel Guillermo Heredia Hernández (born 1975), Mexican sports coach and former discus thrower
Angel | Angel (TV series) | Touched by an Angel | C.D. Luis Ángel Firpo | angel | Guillermo del Toro | Luis Ángel Firpo | Criss Angel | Heredia | Rafael Hernández Colón | Morbid Angel | angel shark | Miguel Ángel González | Miguel Ángel Asturias | Evil Angel | Angel of the Morning | Angel Locsin | SV Angel | Miguel Ángel Rodríguez | Ángel Cabrera | José Aponte Hernández | Horacio Hernandez | Angel (Buffy the Vampire Slayer) | The Wounded Angel | The Blue Angel | Pedro de Heredia | Miguel Ángel González (boxer) | I'm No Angel | Heredia Province | Guillermo Dávila |