Who were the writers of hairspray with Zac Efron?

The movie "Hairspray" (2007) with Zac Efron was based on the Broadway musical of the same name, which was in turn based on the 1988 John Waters film. Here's a breakdown of the writers involved:

Original Movie (1988):

* Written and Directed by: John Waters

Broadway Musical (2002):

* Book: Mark O'Donnell and Thomas Meehan

* Music: Marc Shaiman

* Lyrics: Scott Wittman and Marc Shaiman

Film Adaptation (2007):

* Screenplay by: Leslie Dixon

* Based on the Broadway musical by: Mark O'Donnell, Thomas Meehan, Marc Shaiman, and Scott Wittman

* Based on the 1988 film by: John Waters

So, while Zac Efron starred in the 2007 film adaptation, the credited writers are Leslie Dixon (screenplay), Mark O'Donnell, Thomas Meehan, Marc Shaiman, and Scott Wittman (Broadway musical), and John Waters (original film).