@article {596, editor = {,}, title = {Increase in plasma β endorphins precedes vasodepressor syncope}, volume = {71}, number = {6}, pages = {596--596}, year = {1994}, doi = {10.1136/hrt.71.6.596-a}, publisher = {BMJ Publishing Group Ltd}, issn = {0007-0769}, URL = {https://heart.bmj.com/content/71/6/596.2}, eprint = {https://heart.bmj.com/content/71/6/596.2.full.pdf}, journal = {Heart} }