St. Louis [u.a.]: Mosby-Year Book, 1992

Elsevier BV, 2001

Wiley, 1994

Elsevier BV, 1994

Elsevier BV, 1991

Ovid Technologies (Wolters Kluwer Health), 1990

Elsevier BV, 1989

Elsevier BV, 1986

Elsevier BV, 1985

Elsevier BV, 1985

Elsevier BV, 1984

Ovid Technologies (Wolters Kluwer Health), 1984

American Academy of Pediatrics (AAP), 1979

Oxford University Press (OUP), 1975

Southern Medical Association, 1974

JSTOR, 1974

Elsevier BV, 2000

Elsevier BV, 1988

Elsevier BV, 1987

Elsevier BV, 1987