A Ryan, J Ives, S Wilson and S. Greenfield
Family Practice 27 ( 5 ): 570 - 581 , 2010
A Ryan, S Wilson and S. Greenfield
Journal of Public Health 32 ( 4 ): 519 - 525 , 2010
D. S Johnson, C Cinnioglu, R Ross, A Filby, G Gemelos, M Hill, A Ryan, D Smotrich, M Rabinowitz and M. J. Murray
MHR: Basic science of reprod. Medicine 16 ( 12 ): 944 - 949 , 2010