TY  - RPRT
TI  - Pre-and postoperative endoscopic problems associated with cardiovascular surgery.
AU  - P H HOLINGER
PY  - 1963
DO  - 10.3109/00016486309138756
UR  - https://pubmed.ncbi.nlm.nih.gov/13961297/
ID  - 13961297
ER  -