Springer Science and Business Media LLC, 1990

Informa UK Limited, 1989

Springer Science and Business Media LLC, 1989

British Medical Association, 1986

British Medical Association, 1986

JSTOR, 1984

American Psychological Association (APA), 1983

American Psychological Association (APA), 1983

Springer Science and Business Media LLC, 1981

Oxford University Press (OUP), 1966

Oxford University Press (OUP), 1966

American Psychological Association (APA), 1963

Ovid Technologies (Wolters Kluwer Health), 1962

Ovid Technologies (Wolters Kluwer Health), 1961

Informa UK Limited, 1960

Elsevier BV, 1961

American Public Health Association, 1960

Informa UK Limited, 1959

American Public Health Association, 1958

American Public Health Association, 1957