N. Johnson

发表

M. Sermer, C. Maxwell, A. Lausman, 2009, International journal of gynaecology and obstetrics: the official organ of the International Federation of Gynaecology and Obstetrics.

P. Shannon, P. Shah, R. Windrim, 2009, Journal of obstetrics and gynaecology Canada : JOGC = Journal d'obstetrique et gynecologie du Canada : JOGC.

S. Blaser, R. Windrim, K. Chong, 2008, Ultrasound in obstetrics & gynecology : the official journal of the International Society of Ultrasound in Obstetrics and Gynecology.