Palestinian girls read the Koran at a camp in Gaza City, June 2012. In poor countries, boys are 20 percent more likely than girls to enroll in school, UNICEF says. Mahmud Hams/AFP/Getty Images hide caption

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Clinical specialist Catey Funaiock took notes while observing a 5-year-old boy at the Marcus Autism Center, part of Children's Healthcare of Atlanta, in September. David Goldman/AP hide caption

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Alice Snyder, with her parents Mary and Ryan, during a checkup with Dr. John Herzenberg, who treated her clubfoot without surgery. Jenny Gold/Kaiser Health News hide caption

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You tried burping. You tried bouncing. You tried swaddling. Now what? iStockphoto hide caption

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Marilyn Budzynski takes care of her 20-year-old son, Michael, in Eustis, Fla., in September. Michael suffers from Dravet syndrome, a severe form of epilepsy. Tom Benitez/MCT /Landov hide caption

itoggle caption Tom Benitez/MCT /Landov

Kamora Cyprian got her teeth cleaned at a free health care event in the Los Angeles Sports Arena in September 2012. Kevork Djansezian/Getty Images hide caption

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Jenny Hackett walks across a street in St. Louis, Mo., on Sunday. Subzero temperatures are predicted there Monday, with bitter cold sweeping east. Jeff Roberson/AP hide caption

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Students pick up their lunch at Barre Town Elementary School on Sept. 3, 2013 in Barre Town, Vt. Toby Talbot/AP Photo hide caption

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Neonatal nurse Florence Mwenifumbo monitors a newborn receiving bubble CPAP treatment in Blantyre, Malawi. The device was developed by students at Rice University in Houston. Rice 360/Rice University hide caption

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Almaz Acha sits with her baby Alentse at her home in the rural community of Sadoye, in southern Ethiopia. Families in rural communities, like this one, have benefited from Ethiopia's health extension program. Julien Behal/PA Photos /Landov hide caption

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Vera Wojtesta was one of 300 babies flagged by New York's newborn screening program as at risk of having life-threatening Krabbe disease. Ben Shutts/Courtesy of the Wojtesta family hide caption

itoggle caption Ben Shutts/Courtesy of the Wojtesta family

Though some people might need more of specific vitamins, multivitamins don't help most people, studies say. iStockphoto hide caption

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There's no evidence that triclosan and other chemicals in antibacterial soaps do a better job than plain soap and water, the FDA says. Kiichiro Sato/AP hide caption

itoggle caption Kiichiro Sato/AP