P. Ryan

发表

A. McMichael, J. North, P. Ryan, 1992, International journal of cancer.

J. McNeil, M. Salzberg, A. Johnson, 1993, International journal of epidemiology.

P. Ryan, M. W. Lee, A. Mcmichael, 1992, European journal of cancer. Part B, Oral oncology.

A. McMichael, I. Roberts-Thomson, P. Ryan, 1996, The Lancet.

G. Giles, J. Little, M. Blettner, 1998, International journal of epidemiology.

P. Ryan, D. Hetzel, D. Shearman, 1995, Journal of Gastroenterology and Hepatology.

J. Hiller, P. Ryan, R. Gun, 2008, Occupational and Environmental Medicine.