共 17 条
[3]
CHERNIACK RM, 1972, RESPIRATION HLTH DIS, P194
[4]
DEKKER E, 1957, LANCET, V1, P1064
[6]
Forgacs P, 1969, Br J Dis Chest, V63, P1, DOI 10.1016/S0007-0971(69)80039-2
[7]
FRASER RG, 1970, DIAGNOSIS DISEASE CH, P118