共 6 条
[1]
ANGEL JH, AWAITING PUBLICATION
[2]
ASHCROFT T, 1964, BRIT MED J, V2, P1234
[3]
ELMES PC, 1959, LANCET, V1, P1241
[5]
THE SIGNIFICANCE OF RESPIRATORY SYMPTOMS AND THE DIAGNOSIS OF CHRONIC BRONCHITIS IN A WORKING POPULATION
[J].
BMJ-BRITISH MEDICAL JOURNAL,
1959, 2 (AUG29)
:257-258
[6]
MILLER DL, 1963, AM REV RESPIR DIS, V88, P473