A children's hospital is a hospital which offers its services exclusively to children (including teenagers). The number of children's hospitals proliferated in the 20th century, as pediatric medical and surgical specialties separated from internal medicine and adult surgical specialties. Children's hospitals are characterized by greater attention to the psychosocial support of children and their families.

In addition to the psychosocial support of children and families, Children's hospitals have the added benefit of being staffed by professionals who are trained in treating children. While many normal hospitals can treat children adequately, pediatric specialists may be a better choice when it comes to treating rare afflictions that may prove fatal or severely detrimental to young children, in some cases before birth. Also, many children's hospitals will continue to see children with rare illnesses into adulthood, allowing for a continuity of care.

Every year US News & World Report ranks the top children's hospitals and pediatric specialties in the United States. For the year 2010-2011, eight hospitals ranked in all 10 pediatric specialties. These hospitals make up the 2010-11 Best Children's Hospitals Honor Roll and are listed in alphabetical order as follows:

Katheryn Elizabeth Hudson (born October 25, 1984), known by her stage name Katy Perry, is an American singer, songwriter and actress. Perry grew up with gospel music, and during her first year of high school she pursued a music career as Katy Hudson, releasing her first studio album called Katy Hudson which failed to chart. She recorded a solo album later, which was never released. After signing with Capitol Music Group in 2007, her fourth record label in seven years, she adopted the stage name Katy Perry.

She first gained recognition with the release of her first mainstream album, One of the Boys in 2008, which spawned three Billboard Hot 100 top-ten songs—"I Kissed A Girl", "Hot n Cold" and "Waking Up In Vegas". Perry supported the album with her Hello Katy Tour. In 2010, her third studio album, Teenage Dream (2010), which topped the Billboard 200 chart, and spawned five number one singles—"California Gurls", "Teenage Dream", "Firework", "E.T." and "Last Friday Night (T.G.I.F.)"—Teenage Dream was the only album (after Michael Jackson's Bad)—to do so, and the first female in history to achieve this milestone. She embarked on the California Dreams Tour, which grossed nearly $60 million worldwide. Perry re-released the album under the name of Teenage Dream: The Complete Confection on March 26, 2012, and the re-release has already spawned the number-one single "Part of Me".

Megan Mullally (born November 12, 1958) is an American actress of both stage and screen as well as a singer.

After working in the theatre in Chicago, Mullally moved to Los Angeles in 1985 and began to appear in supporting roles in film and television productions. She made her Broadway debut in Grease in 1994 and she has since appeared in several Broadway musicals. From 1998 until 2006, she played Karen Walker on the TV sitcom Will & Grace, arguably her best-known role to date. From 2006 until early 2007, Mullally hosted the short lived talk show The Megan Mullally Show. She has since appeared in guest-starring roles in television programs such as Parks and Recreation, Happy Endings, 30 Rock, Up All Night, Boston Legal and a GLAAD Award-winning episode of The New Adventures of Old Christine. In 2010, Mullally starred as Lydia in the second season of Party Down. She currently stars as Chief on Adult Swim's Childrens Hospital, and recurs as Tammy Swanson on NBC's Parks and Recreation and as Dana Hartz on ABC's Happy Endings. She also joined the cast of Breaking In for its second season, which began airing on March 6, 2012.