T1, 1982, n = 145 (100 %) T2, 1985, n = 131 (90 %) T3, 2005, n = 80 (57 %) (12 women, 68 men) 51 children born in Vietnam (age >23) Spouses: Resp. without children included, n = 26 Included parents, n = 54 (8 mothers, 46 fathers) T3, 2005, n = 38 (34 mothers, 4 fathers) 127 children born in Norway (age 4-23) 27 (age 4-9) 67 (age 10-18) 12 (age 19-23) Attrition: 21 * *Reasons for attrition: Parents divorced, no permission to contact children; children studying away from home, not possible to reach; children not reported by parents; 13 children refused participation