AU  - Campbell SC
TI  - USe of the combination product ipratropium and albuterol in chronic obstructive pulmonary disease
PT  - JOUR
DP  - 1999
TA  - Archives of Internal Medicine
pages = {1499},
VI  - 159
IP  - 13
AID  -  [doi]
4100  - http://dx.doi.org/
SO  - Archives of Internal Medicine July 12, 1999 159(13):1499