Hi Winzo, and thanks for your post - as my colleague, , said - it's a great question. Besides her response to you, in which she included links to several excellent and related articles, I did want to ask if you were being followed by a physician? Have you been diagnosed with COPD? Is there anything further you are able to share with the community at this time?
If we can assist you in any way, please let me or any other moderator / team member know.
Wishing you well,
Leon (site moderator COPD.net)