Delivery of Ipratropium and Albuterol Combination Therapy for Chronic Obstructive Pulmonary Disease: Effectiveness of a Two-in-one Inhaler Versus Separate InhalersByElizabeth Chrischilles, PhD,Daniel Gilden, MS,Joanna Kubisiak, MPH,Linda Rubenstein,Hemal Shah, PharmDOctober 1st 2002
