@misc{indiciae2aa7b199c492, title = {A novel visually CO2 controlled alveolar breath sampling technique.}, author = {Thomas Birken and Jochen Schubert and Wolfram Miekisch and Gabriele Nöldge-Schomburg}, year = {2006}, url = {https://pubmed.ncbi.nlm.nih.gov/17148862/}, note = {Source identifier: 17148862} }