Efficacy and safety of letosteine in the treatment of sputum thickening and expectoration difficulty in patients with respiratory diseases: a multicenter, randomized, double-masked, double dummy, positive drug parallel controlled trial

Publisher: Govi-Verlag

ISSN: 0031-7144

Source: Die Pharmazie - An International Journal of Pharmaceutical Sciences, Vol.69, Iss.11, 2014-11, pp. : 842-849

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