44
Published 2007
Office of the Surgeon General, U.S. Public Health Service, U.S. Dept. of Health and Human Services

46
by Hernandez, Lyla M.
Published 2009
National Academies Press

47
by Choffnes, Eileen R.
Published 2009
National Academies Press

48
by Relman, David A.
Published 2010
National Academies Press

50
Published 2000
National Academy Press

51
by Erinoff, Eileen G.
Published 2011
Agency for Healthcare Research and Quality

52
Published 2011
National Academies Press