P. O'brien

发表

J. Higham, R. Shaw, P. O'Brien, 1990, British journal of obstetrics and gynaecology.

P. Griffiths, P. Lindsay, L. Irvine, 1990, FEMS microbiology immunology.

P. Lindsay, R. Beveridge, Y. Tayob, 1990, American journal of obstetrics and gynecology.

R. Johanson, C. Rice, A. Shokr, 1992, British journal of obstetrics and gynaecology.

F. Okonofua, P. O'Brien, R. Chan, 1986, International journal of gynaecology and obstetrics: the official organ of the International Federation of Gynaecology and Obstetrics.