Davis JR. Medical issues for a mission to Mars. Aviation, Space and Environmental Medicine 70: 162-168; 1999.
Levine DS, Greenleaf JE. Immunosuppression during spaceflight deconditioning. Aviation, Space and Environmental Medicine 69: 172-177; 1998.
Campbell MR. Surgical care in space. Aviation, Space and Environmental Medicine 70: 181-184; 1999.
International Space University. Hazards to Spaceflight, Design Project Report. Cleveland: ISU SSP’98: 1998.
Keifer J, Kost M, Schenk-Meuser KS. Radiation Biology. In: Moore D, Bie P, Oser H, eds. Biological and Medical Research in Space. Berlin: Springer; 1996: 300-367.
Stebbing J. Too much life on earth? QJM 90: 597-599; 1997.