Adjunctive Treatment with Rhodiola Crenulata in Patients with Chronic Obstructive Pulmonary Disease–A Randomized Placebo Controlled Double Blind Clinical Trial. [ Free Full-text ]
Adjunctive Treatment with Rhodiola Crenulata in Patients with Chronic Obstructive Pulmonary Disease–A Randomized Placebo Controlled Double Blind Clinical Trial. PLoS...