61
Published 2004
National Academies Press

62
Published 2000
National Academy Press

63
Published 2009
National Academies Press

64
Published 2002
National Academies Press

66
by Suitor, Carol West
Published 2011
National Academies Press

69
Published 2009
RCOG Press

70
Published 2006
National Academies Press

71
Published 2008
National Academies Press

72
Published 2012
World Health Organization

73
by Smedslund, Geir, Hagen, Kåre Birger, Steiro, Asbjørn, Johme, Torill
Published 2006
Knowledge Centre for the Health Services at The Norwegian Institute of Public Health (NIPH)

75
Published 2019
The National Academies Press

78
Published 2006
Swedish Council on Health Technology Assessment (SBU)

79
Published 2019
National Academies Press

80
Published 1988
National Academy Press