J. Krammer

发表

J. Drake, C. J. Casto, J. Krammer, 2000, Obstetrical & gynecological survey.
M. Williams, W. F. O'brien, J. Krammer, 1997, Obstetrics and gynecology.
D. Mastrogiannis, W. F. O'brien, J. Krammer, 1991, American journal of obstetrics and gynecology.
W. F. O'brien, J. Krammer, 1995, Clinical obstetrics and gynecology.
M. Williams, M C Williams, J Krammer, 1995, Obstetrics and gynecology.
D. Mastrogiannis, W. F. O'brien, T. O’Leary, 1993, American journal of obstetrics and gynecology.
D. Mastrogiannis, W. F. O'brien, T. O’Leary, 1994 .