共 4 条
[2]
Should inhaled anticholinergics be added to β2 agonists for treating acute childhood and adolescent asthma?: A systematic review
[J].
BMJ-BRITISH MEDICAL JOURNAL,
1998, 317 (7164)
:971-977
[4]
RODRIGO C, 1996, AM J RESP CRIT CARE, V153, pA60