One of the characteristic manifestations of prolonged stress is decreased performance in tasks that require attention, including the ability to shift focus as well as to learn and unlearn information. Anxiety and depression can make a person feel as if he
W. Chang, and I. McLean. BMC medical research methodology, (January 2006)4243<m:linebreak></m:linebreak>PUBM: Electronic; DEP: 20060302; JID: 100968545; 2005/09/07 received; 2006/03/02 accepted; 2006/03/02 aheadofprint; epublish;<m:linebreak></m:linebreak>Mesures de contrast.
A. Farmer, R. Milne, and T. Walley. BMJ (Clinical research ed.), (January 2011)6008<m:linebreak></m:linebreak>JID: 8900488; epublish;<m:linebreak></m:linebreak>Recerca clínica.