[1] JOSEPH & KATHLEEN BRYAN ALZHEIMERS DIS RES CTR,DEPT MED,DIV NEUROL,DURHAM,NC
[2] DUKE UNIV,MED CTR,CTR STUDY AGING & HUMAN DEV,DURHAM,NC 27710
[3] VET ADM MED CTR,AUDIOL SPEECH PATHOL SERV,DURHAM,NC 27705
[4] DUKE UNIV,MED CTR,DEPT COMMUNITY & FAMILY MED,DIV BIOMETRY,DURHAM,NC 27710