Population Pharmacokinetics and Pharmacodynamics of GSK961081 (Batefenterol), a Muscarinic Antagonist and β2-Agonist, in Moderate-to-Severe COPD Patients: Substudy of a Randomized Trial. - Ambery, Claire L.; Wielders, Pascal; Ludwig-Sengpiel, Andrea; Chan, Robert; Riley, John H. (Drugs in R&D, 2015)