APA

Halpern R., Baker C. L., Su J., Woodruff K. B., Paulose-Ram R., Porter V. & Shah H. (20111110). Outcomes associated with initiation of tiotropium or fluticasone/salmeterol in patients with chronic obstructive pulmonary disease. : Patient preference and adherence.

Chicago

Halpern Rachel, Baker Christine L, Su Jun, Woodruff Kimberly B, Paulose-Ram Ryne, Porter Victoria and Shah Hemal. 20111110. Outcomes associated with initiation of tiotropium or fluticasone/salmeterol in patients with chronic obstructive pulmonary disease. : Patient preference and adherence.

Harvard

Halpern R., Baker C. L., Su J., Woodruff K. B., Paulose-Ram R., Porter V. and Shah H. (20111110). Outcomes associated with initiation of tiotropium or fluticasone/salmeterol in patients with chronic obstructive pulmonary disease. : Patient preference and adherence.

MLA

Halpern Rachel, Baker Christine L, Su Jun, Woodruff Kimberly B, Paulose-Ram Ryne, Porter Victoria and Shah Hemal. Outcomes associated with initiation of tiotropium or fluticasone/salmeterol in patients with chronic obstructive pulmonary disease. : Patient preference and adherence. 20111110.