Alaska.

发表

Madison, Atlanta, T. Frieden, 2012, MMWR. Morbidity and mortality weekly report.

Calif., John W. Wydler, Toronto, 1996 .

J. Crowley, Alaska., J. M. Krehlik, 1985, The Western journal of medicine.

Florida., Alaska., North Georgia, 1994, MMWR. Morbidity and mortality weekly report.