共 13 条
[3]
CRANE J, 1989, LANCET, V1, P917
[4]
NALINE E, 1994, EUR RESPIR J, V7, P914
[6]
*NIH, 2004, NIH PUBL
[10]
SPEIZER FE, 1968, BMJ-BRIT MED J, V1, P229