@article {644, editor = {,}, title = {Calendar}, volume = {15}, number = {7}, pages = {644--646}, year = {1974}, publisher = {Society of Nuclear Medicine}, issn = {0161-5505}, URL = {https://jnm.snmjournals.org/content/15/7/644}, eprint = {https://jnm.snmjournals.org/content/15/7/644.full.pdf}, journal = {Journal of Nuclear Medicine} }