The Center on Media and Child Health Database of Research (1956–2010), MEDLINE (1950–2010), Ovid CINAHL (1981–2010), Ovid (1967–2010), EMBASE (1974–2010), and the Cochrane Central Register of Controlled Trials (CENTRAL; through Wiley Interference; 1948–2010). Search techniques were made with the assistance of two master investigation caretakers. When open, search exactness was overhauled by the development of […]