by Helmkamp, B.Frederick, Krebs, Hans-B., Corbett, Susan L., Trodden, Regina M., Black, Pamela W.
Published in American journal of obstetrics and gynecology (01.08.1997)

by Krebs, H B, Helmkamp, B F
Published in Obstetrics and gynecology (New York. 1953) (01.08.1991)

by Krebs, H B, Helmkamp, B F
Published in Obstetrics and gynecology (New York. 1953) (01.10.1990)

by Helmkamp, B F, Krebs, H B
Published in American journal of obstetrics and gynecology (01.11.1990)

by Helmkamp, B F, Kimmel, J
Published in American journal of obstetrics and gynecology (15.07.1985)

by Helmkamp, B F, Sanko, S R
Published in American journal of obstetrics and gynecology (01.12.1985)

by Krebs, H B, Helmkamp, B F
Published in Obstetrics and gynecology (New York. 1953) (01.02.1984)

by Helmkamp, B F, Denslow, B L, Bonfiglio, T A, Beecham, J B
Published in American journal of obstetrics and gynecology (15.08.1983)

by Helmkamp, B F
Published in American journal of obstetrics and gynecology (01.08.1977)

by Krebs, Hans-B., Pastore, Lucia, Helmkamp, B. Frederick
Published in American journal of obstetrics and gynecology (01.08.1993)

by Dvoretsky, P M, Bonfiglio, T A, Patten, Jr, S F, Helmkamp, B F
Published in Acta cytologica (01.05.1985)

by Helmkamp, B F
Published in Diagnostic gynecology and obstetrics (1982)

by Krebs, H B, Helmkamp, B F
Published in American journal of obstetrics and gynecology (01.08.1991)

by Frederick Helmkamp, B., Sevin, Bernd-Uwe, Greening, Shirley E., Nadji, Mehrdad, Ng, Alan B.P., Averette, Hervy E.
Published in Gynecologic oncology (01.02.1981)

by Helmkamp, B F, Civetta, J M, Girtanner, Jr, R, Krebs, H B, Poliakoff, S R
Published in American journal of obstetrics and gynecology (15.03.1981)