PT - JOURNAL ARTICLE ED - , TI - Digital Programming AID - 10.1126/science.298.5594.699i DP - 2002 Oct 25 TA - Science PG - 699i--699i VI - 298 IP - 5594 4099 - http://science.sciencemag.org/content/298/5594/699i.short 4100 - http://science.sciencemag.org/content/298/5594/699i.full SO - Science2002 Oct 25; 298