Name Info Provider Link
Cough free resource MedlinePlus Health Information https://medlineplus.gov/cough.html
free resource Public Library of Science https://dx.plos.org/10.1371/journal.pone.0034818
free resource PubMed Central https://www.ncbi.nlm.nih.gov/pmc/articles/pmid/22536332/
free resource Europe PubMed Central https://europepmc.org/abstract/MED/22536332