PT - JOURNAL ARTICLE AU - Roger Collier TI - NHS ransomware attack spreads worldwide AID - 10.1503/cmaj.1095434 DP - 2017 Jun 05 TA - Canadian Medical Association Journal PG - E786--E787 VI - 189 IP - 22 4099 - http://www.cmaj.ca/content/189/22/E786.short 4100 - http://www.cmaj.ca/content/189/22/E786.full SO - CMAJ2017 Jun 05; 189