Original sentence: According to Forbes Magazine, Leonardo expert Carlo Pedretti confirmed that it might be by Leonardo.Attributed by Carlo Pedretti.Attribution based upon the detailed left handed underdrawing (Da Vinci was the only left handed master of this period), attacker painted in self image of Da vinci, Da Vinci's fingerprints imbedded in paint (matching St.Jerome in the Desert's fingerprints), two accepted preparatory drawings by Da Vinci of Christ Carrying the Cross being attacked having hair pulled from behind; attackers similar to those painted in Da Vinci's "Battle of Anghiari" fresco.Martin Kemp, an expert on Leonardo's fingerprints, had examined detailed transparencies of this painting and has defferred to Pedretti opinion.[http:www.com/forbes/2003/1222/178.html Stephane Fitch DaVinci's Fingerprints, 12.22.03] accessed 7 July 2009
Edited sentence: According to Forbes Magazine, Leonardo expert Carlo Pedretti was called in, but his relationship with Brugnara broke down.Attributed by Luke Brugnara, owner.Attribution based on the similarity of the tormentors of Christ to drawings made by Rubens of the Battle of Anghiari.He did not confirm a suggestion that it might be by Leonardo.Stephane Fitch DaVinci's Fingerprints, 12.22.03 accessed 7 July 2009.The mention of fingerprints in the heading of the article is misleading, as Martin Kemp, the expert on Leonardo's fingerprints, had not examined the painting when the article was written