| http://www.w3.org/ns/prov#value | - There were several predictors of decreased willingness or ability to work, including having less than adequate or no PPE, being afraid that one's family would become ill with or die of the flu, being assigned to direct care of patients with pandemic flu, knowing that other health care workers had been quarantined or had died of the flu, being sick oneself for any reason, lacking a written family p
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