TY  - RPRT
TI  - Virus evolution: epidemics-in-waiting.
AU  - Jim Bull
AU  - Dan Dykhuizen
PY  - 2003
DO  - 10.1038/426609a
UR  - https://pubmed.ncbi.nlm.nih.gov/14668840/
ID  - 14668840
ER  -