1. Kaposi's sarc-oma and Pneumocystis carinii pneumonia among homosexual men-New York and California;AM, I.Friedman-Kien; L, Laubenstein; M, Marmor;MMWR,1981
2. Primary P'neumocystis carinii and cytomegalovirus infec-tions;Dubois, R.M.; Braithwaitc, M.A.; Mikhail, JR, Batten; J.C.;Lancet,1981
3. Centers for Discase Control. Update on acquired immune defkiiency syndrome (AIDS)-Unitcd States;MMWR,1982
4. The statistical analysis offailure time;Kalbfleish, J.D.; Prcntice, R.L.,1980
5. statistical softwvare;JBMI)P, Dixon,1983