HBO Documentary Films and the National Institute on Aging of the National Institutes of Health ... present ; executive producers, Sheila Nevins, Maria Shriver ; series producer, John Hoffman
writers/directors, Marion Gruner, Christopher Sumpton ; producers, Christopher Sumpton, Robin Benger, Marion Gruner ; produced in association with Arte France, Unité Découverte et Connaissance ; and in association with Canadian Broadcasting Corporation ; Cogent Benger Productions Inc
a NOVA production by Big House Productions for WGBH Boston ; executive producer, Chris Schmidt ; co-produced by Cara Feinberg ; written, produced and directed by Daniel McCabe
Hollywood Pictures ; Andrew G. Vajna presents a John McTiernan film ; Cinergi Productions ; story by Tom Schulman ; screenplay by Tom Schulman and Sally Robinson ; produced by Andrew G. Vajna and Donna Dubrow ; directed by John McTiernan
a Nova/WGBH, La Cinquième, Südwestrundfunk, Gedéon Programmes, Meridian, and NHK co-production ; produced for Nova by Providence Pictures, Inc. for WGBH/Boston ; written and directed by Liesl Clark