共 7 条
- [1] LEVIN M L, 1953, Acta Unio Int Contra Cancrum, V9, P531
- [2] Lilienfeld A. M., 1969, EPIDEMIOLOGY MONGOLI
- [3] MANTEL N, 1966, AM J MENT DEFIC, V71, P1025
- [4] Penrose L.S., 1966, DOWNS ANOMALY
- [7] SIGLER AT, 1965, B JOHNS HOPKINS HOSP, V117, P374