by Spitzer, Walter O, Lewis, Michael A, Heinemann, Lothar A J, Thorogood, Margaret
Published in BMJ (13.01.1996)

by Spitzer, Walter O, Suissa, Samy, Ernst, Pierre, Horwitz, Ralph I, Habbick, Brian, Cockcroft, Donald, Boivin, Jean-François, McNutt, Mary, Buist, A. Sonia, Rebuck, Anthony S
Published in The New England journal of medicine (20.02.1992)

by Suissa, Samy, Blais, Lucie, Spitzer, Walter O., Cusson, Jean, Lewis, Michael, Heinemann, Lothar
Published in Contraception (Stoneham) (01.09.1997)

by Spitzer, Walter O
Published in Journal of obstetrics and gynaecology Canada (01.12.2003)

by Lewis, Michael A, Spitzer, Walter O, Heinemann, Lothar A J, MacRae, Kenneth D, Bruppacher, Rudolf
Published in BMJ (13.01.1996)

by Spitzer, Walter O., Faith, Janet M., MacRae, Kenneth D.
Published in Human reproduction (Oxford) (01.09.2002)

by Blaxill, Mark F, Baskin, David S, Spitzer, Walter O
Published in Journal of autism and developmental disorders (01.04.2003)

by Spitzer, Walter O.
Published in Journal of clinical epidemiology (01.12.2002)

by Ernst, P, Spitzer, W O, Suissa, S, Cockcroft, D, Habbick, B, Horwitz, R I, Boivin, J F, McNutt, M, Buist, A S
Published in JAMA : the journal of the American Medical Association (23.12.1992)

by Heinemann, Lothar A J, Lewis, Michael A, Thorogood, Margaret, Spitzer, Walter O, Guggenmoos-Holzmann, Irene, Bruppacher, Rudolf
Published in BMJ (06.12.1997)

by Spitzer, Walter O
Published in The New England journal of medicine (06.03.2003)

by Spitzer, Walter O.
Published in Contraception (Stoneham) (01.08.2000)

by Spitzer, W O, Sackett, D L, Sibley, J C, Roberts, R S, Gent, M, Kergin, D J, Hackett, B C, Olynich, A
Published in The New England journal of medicine (31.01.1974)

by SUISSA, S, POLLAK, M, SPITZER, W. O, MARGOLESE, R
Published in Cancer research (Chicago, Ill.) (01.06.1989)

by Masley, Michele L., Habbick, Brian F., Spitzer, Walter O., Stuchly, Maria A.
Published in Canadian journal of public health (01.09.1999)

by Spitzer, Walter O
Published in BMJ (28.10.1995)

by Spitzer, Walter O
Published in The New England journal of medicine (19.04.1984)

by Lewis, Michael A, Spitzer, Walter O, Heinemann, Lothar A J, MacRae, Kenneth D, Bruppache, Rudolf
Published in BMJ (13.09.1997)

by Tousignant, P, Groome, P A, Spitzer, W O, Schechter, M T, Montano, L, Hutcheon, M E
Published in International journal of epidemiology (01.10.1994)

by Anderson, G M, Spitzer, W O, Weinstein, M C, Wang, E, Blackburn, J L, Bergman, U
Published in Clinical pharmacology and therapeutics (01.08.1990)