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Mucolytic Effectiveness of Tyloxapol in Chronic Obstructive Pulmonary Disease - A Double-Blind, Randomized Controlled Trial

Fig 1

Study design.

Phase A patients were treated with either Tyloxapol or saline for 21 days at three inhalations a day. After a wash-out phase of 7 days, Phase B started. Patients were switched to the other medication for another 21 days.

Fig 1

doi: https://doi.org/10.1371/journal.pone.0156999.g001