context: The game show production team of Mark Goodson and Bill Todman was responsible for producing the original as well as the revival versions of the game show. Goodson-Todman staffer Bob Stewart (television producer) is credited with creating the original version of The Price Is Right. Roger Dobkowitz was the producer from 1984 to 2008, having worked with the program as a production staffer since the shows debut after graduating from San Francisco State University. Occasionally, Dobkowitz appeared on-camera when answering a question posed by the host, usually relating to the shows history or records. When he left the show at the end of season 36, Variety (magazine) reported that it was unclear whether he was retiring or was fired, although Carey indicated in a later interview with Esquire (magazine) that Dobkowitz was fired. As of 2011, the show uses multiple producers, all long-time staffers. Adam Sandler (not to be confused with Adam Sandler) is the producer and director of the show. Stan Blits, who joined the show in 1980 and Sue MacIntyre are the co-producers. Kathy Greco joined the show in 1975 and became producer in 2008; she announced her retirement October 8, 2010 on the shows website, effective at the end of the December 2010 tapings. Her last episode as producer, which aired January 27, 2011, featured a theme in tribute to her. The shows official website featured a series of videos including an interview with Greco as a tribute to her 35 years in the days leading up to her final episode. Frank Wayne, a Goodson-Todman staffer since the 1950s, was the original executive producer of the CBS version of the show. Barker assumed that role after Waynes death in March 1988, as previously stated. Previous producers have included Jay Wolpert, Barbara Hunter and Phil Wayne Rossi (Waynes son). Michael Dimich assumed the directors chair in June 2011. Marc Breslow, Paul Alter, Bart Eskander and Rich DiPirro each served long stints previously as director. Former associate directors Andrew Felsher and Fred Witten, as well as technical director Glenn Koch, have directed episodes strictly on a fill-in basis. Sandler began directing episodes in 2012, and became the official director in 2013. Aside from Barker, the shows production staff remained intact after Carey became host. FremantleMedia executive Syd Vinnedge was named the programs new executive producer, with Richards becoming co-executive producer after Dobkowitzs departure. Richards was a candidate to replace Barker as host in 2007, before Carey was ultimately chosen. Richards succeeded Vinnedge as executive producer when the 2009-10 season started, with Tracy Verna Soiseth joining Richards as co-executive producer in 2010. Vinnedge remains credited as an executive consultant to the show.
question: Who were the co-producers in 2011?
answer: Stan Blits