21
Published 2015
Canadian Agency for Drugs and Technologies in Health

22
Published 2016
Canadian Agency for Drugs and Technology in Health, Canadian Electronic Library

23
by Wizemann, Theresa M.
Published 2011
National Academies Press

25
Published 2008
Royal College of Physicians

26
Published 2012
British Psychological Society

27
Published 2010
National Academies Press

28
Published 1999
National Academy Press

29
Published 1999
National Academy Press

30
Published 1999
National Academy Press

31
Published 2014
National Academies Press

32
by Olson, Steve
Published 2014
National Academies Press

33
by Davis, Miriam, Stroud, Clare
Published 2013
National Academies Press

34
by McClellan, Mark B.
Published 2008
National Academies Press

35
Published 2014
The National Academies Press

36
by Grossmann, Claudia, Alper, Joe
Published 2013
The National Academies Press

39
by Rosof, Bernard M.
Published 2001
National Academy Press

40
Published 2014
National Academies Press