Question: Who are the creators of the American medical drama television series for which Shelley Meals is a Co-Executive Producer?
Context: Chicago Med is an American medical drama television series created by Dick Wolf and Matt Olmstead, and is the third installment of Dick Wolf’s "Chicago" franchise.  The series premiered on NBC on November 17, 2015.  "Chicago Med" follows the emergency department doctors and nurses of Gaffney Chicago Medical Center as they tackle unique new cases and forge fiery relationships in the pulse-pounding pandemonium of the emergency room. Fred Einesman is a physician and television writer/producer.  He is currently an Executive Producer on the ABC television drama Grey's Anatomy.  Previously he was the medical supervisor for the popular television medical drama "ER" and was the Co-Executive producer of the ABC drama Private Practice.  Dr. Einesman trained at the Faculty of Medicine at McGill University and completed a residency and fellowship in Emergency Medicine at UCLA.  He also received an MFA in Film Production from the University of Southern California.  He has consulted on a large number of Hollywood screen and television productions. The first series of the British medical drama television series "Holby City" commenced airing in the United Kingdom on BBC One on 12 January 1999, and concluded on 9 March 1999.  The show was created by Mal Young and Tony McHale as a spin–off from the BBC medical drama "Casualty", intended to follow the treatment of patients from "Casualty" as they were transferred onto the hospital's surgical wards.  McHale served as the programme's lead writer throughout the first series, which ran for nine episodes.  Young cast actors who were already established names in the acting industry, particularly from a soap opera background.  Several cast members shadowed real surgeons and nurses in preparation for their roles to increase the show's realism.  The series received mixed reviews from critics.  It was compared favourably with "Casualty", but received negative reviews in which it was contrasted poorly with the American medical drama "ER".  The series première attracted 10.72 million viewers, falling to 8.51 million by the series finale. Douglas "Doug" Petrie is an American screenwriter, director, and producer.  Best known as a writer, director, and co-executive producer on "Buffy the Vampire Slayer".  He co-wrote the screenplays for the "Fantastic Four" film and "Harriet the Spy".  He has also written for the television shows "Angel", "The 4400", "Tru Calling" and "".  He served as a co-executive producer and writer for two seasons on "" and as a consulting producer and writer on the second season of "Pushing Daisies".  He made a cameo on Joss Whedon's web-based film, "Dr. Horrible's Sing-Along Blog", as "Professor Normal".  He served as co-executive producer on the first season of the Netflix show "Daredevil", and took over as showrunner for its second season alongside Marco Ramirez.  In April 2016 Petrie and Ramirez were announced as showrunners of "The Defenders", a miniseries that crosses over "Daredevil", "Jessica Jones", "Luke Cage", and "Iron Fist". Gregori J. Martin (born Gregorio Barbieri Jr. on May 6, 1978) is a multiple Emmy Award-winning producer and the founder, CEO, and president of LANY Entertainment (formerly known as LANYfilms Productions) an independent bi-coastal entertainment company.  Martin is best known for his two-time Emmy winning and three-time Emmy-nominated indie soap opera web series "The Bay", for which he won the 2015 Daytime Emmy Award for Outstanding New Approaches Drama Series and the 2016 Daytime Emmy Award for Outstanding Digital Daytime Drama Series.  Martin is also known for the theatrically released independent vampire thriller "Raven", a feature film produced by GruntWorks Entertainment where he originally served as a producer, director and as president for approximately four years.  Martin is currently in development on a six-hour miniseries titled "The Disciples" that was sold to Sony Entertainment and serves as co-executive producer and head writer of the made-for-TV miniseries.  Martin also serves as co-executive producer and director of the new situation comedy "This Just In" for Associated Television International (ATI).  Martin was awarded the 2011 Indie Series Award for Outstanding Directing for his work on "The Bay" and was again nominated in 2016. City of Angels is an American medical drama television series which ran for two seasons on CBS during the 2000 calendar year.  It was network television's first medical drama with a predominantly African American cast. Casualty, stylised as CASUALY, is a British medical drama series that airs weekly on BBC One (sometimes with a short break in the summer between series, but not always).  It is the longest-running emergency medical drama television series in the world, and the most enduring medical drama shown on prime time television in the world.  Created by Jeremy Brock and Paul Unwin, it was first broadcast in the United Kingdom on BBC One on 6 September 1986.  The original producer was Geraint Morris. Lifestories is an American medical drama television series that premiered August 20, 1990, on NBC.  Done in a documentary style with off-screen narration by Robert Prosky, "Lifestories" was an attempt to make an extremely realistic medical drama answering questions like, "Exactly what goes on during the first 45 minutes of a heart attack?"  "What is it like to be told that you have advanced colon cancer?" Shelley Meals is an American television writer and producer.  She is currently a Co-Executive Producer on "Chicago Med".  She has also worked on "Stitchers", "Witches of East End", "King & Maxwell," "Rizzoli & Isles", "Crude", "Wild Card", "Strong Medicine", "Time of Your Life", "Push", "Dawson's Creek", "Fame L.A.", "Dangerous Minds", and "New York Undercover".  Her writing partner is Darin Goldberg. ER is an American medical drama television series created by novelist and medical doctor Michael Crichton that aired on NBC from September 19, 1994, to April 2, 2009, with a total of 331 episodes spanning over 15 seasons.  It was produced by Constant c Productions and Amblin Television, in association with Warner Bros.  Television.  "ER" follows the inner life of the emergency room (ER) of fictional County General Hospital in Chicago, Illinois, and various critical issues faced by the room's physicians and staff.  The show became the longest-running primetime medical drama in American television history.  It won 23 Primetime Emmy Awards, including the 1996 Outstanding Drama Series award, and received 124 Emmy nominations, which makes it the most nominated drama program in history.  "ER" won 116 awards in total, including the Peabody Award, while the cast earned four Screen Actors Guild Awards for Outstanding Ensemble Performance in a Drama Series.
Answer: Dick Wolf and Matt Olmstead