@misc{indiciae71b1ed5580a7, title = {Stereostethoscope.}, author = {A F Turner and F Y Lau}, year = {1970}, doi = {10.1016/s0140-6736(70)90047-4}, url = {https://pubmed.ncbi.nlm.nih.gov/4194738/}, note = {Source identifier: 4194738} }