Authors: Mary McGrae McDermott; Philip Greenland; Jack M Guralnik; Kiang Liu; Michael H Criqui; William H Pearce; Cheeling Chan; Joseph Schneider; Leena Sharma; Lloyd M Taylor; Adnan Arseven; Maureen Quann; Lillian Celic Journal: J Gen Intern Med Date: 2003-06 Impact factor: 5.128