Dqw-1-0602 (dqwi) is not present in non-dr2 caucasian narcoleptsics - Mingnot, E; Matsuki, K; Kalil Filho, Jorge Elias; George, C; Singh, S; Billard, M; Montplaisir, J; Lin, X; Arrigoni, J; Guilleminault, C; Dement, William C.; Grumet, F C (Sleep, 1992)