@misc{indiciaef2ecd3ca5e31, title = {Improved simulation system for routine cardiopulmonary exercise test equipment: introductory remarks. ECSC Working Group on Standardization Stress Test Methods.}, author = {R Serra}, year = {1997}, url = {https://pubmed.ncbi.nlm.nih.gov/9203819/}, note = {Source identifier: 9203819} }