All presentations between the study dates were retrieved from the ED electronic medical record (Health E-Care, MCare Systems, Sydney).
Divergence dates were retrieved from the TimeTree of Life database (http://www.timetree.org, last accessed December 18 , 2014) that combines both paleontological and molecular dating estimates.
Data on civil registration number, ICD-10 and procedure code, name of health institution/hospital, department responsible for treatment as well as admission and discharge dates were retrieved from the NPR of Norway.
Cancer diagnoses made after this date were retrieved from the National Patient Registry NPRR) until six months after the date for inclusion of the last patient.
Data on socioeconomic factors (education level, number of days on sick leave and disability pension in the year before the index date) were retrieved from the Statistics Sweden database.
Based on the first isolation date of MRSA and the national identity code, data on previous hospitalizations within 2 years before the MRSA isolation date were retrieved from the National Hospital Discharge Register HILMOO).
Rice annotation data were retrieved from RAP-DB (http://rapdb.dna.affrc.go.jp/, 20 September 2013, date last accessed), and the data for B. distachyon and sorghum were downloaded from Phytozome (http://www.phytozome.net/, 20 September 2013, date last accessed).
Data on patient sex, age, place of residence, suspected location of disease exposure, date of exposure, date of onset of illness, date of diagnosis, and date of notification were retrieved from this database.
Data up to date by February 2009 were retrieved from the Reference Sequence (RefSeq) collection in the National Center for Biotechnology information (NCBI; http://www.ncbi.nlm.nih.gov), the Integrated Microbial Genomes (IMG) system in DOE Joint Genome Institute (JGI; http://img.jgi.doe.gov), and peer-reviewed publications (Supplemental Table S1).
Formalin-fixed paraffin-embedded specimens (dating from 1999 to 2008) were retrieved from the Pathology Service of the Second Affiliated Hospital of Sun Yat-Sen UniverSun Yat-Sen
First-year deaths from any cause and the date of death were retrieved from the hospital administrative database linked to the National Board of Health and Welfare's Cause of Death Register.
