@article{art537,
  title = {Efficacy and Safety for the Combination of Levosalbutamol, Ambroxol and Guaifenesin for the Symptomatic Treatment of Productive Cough: Phase IV Clinical Trial},
  doi = {10.23958/ijirms/vol04-i01/537},
  url = {https://www.ijirms.in/index.php/ijecs/article/view/537}
}