42
by Gelijns, Annetine
Published 1991
National Academy Press

43
Published 1999
National Center for Biotechnology Information

44
by Romiti, Monica
Published 2005
National Center for Biotechnology Information

45
Published 2010
National Center for Biotechnology Information

47
Published 1998
National Academy Press

48
Published 1991
National Academies Press (US)

50
Published 2009
National Academies Press

51
by Wessner, Charles W.
Published 2013
National Academies Press

52
by Wessner, Charles W.
Published 2012
National Academies Press

53
Published 2002
National Academy Press

54
Published 1996
National Academy Press

56
Published 2014
Canadian Agency for Drugs and Technologies in Health