共 13 条
[1]
ARNOLD K, COMMUNICATION
[3]
CHANOCK R, 1967, B WORLD HEALTH ORGAN, V37, P363
[4]
DINGLE JH, 1968, AM REV RESPIR DIS, V97, P1
[5]
FRANSEN H, 1967, ACTA MED SCAND, V182, P323
[6]
KRAVETZ HM, 1961, JAMA-J AM MED ASSOC, V176, P657
[7]
LETGERS LJ, 1973, COMMUNICATION 0610
[10]
Ward T G, 1973, Prog Med Virol, V15, P126