@article {19a, editor = {,}, title = {Placement}, volume = {9}, number = {4}, pages = {19a--20A}, year = {1981}, publisher = {Society of Nuclear Medicine}, issn = {0091-4916}, URL = {https://tech.snmjournals.org/content/9/4/19a}, eprint = {https://tech.snmjournals.org/content/9/4/19a.full.pdf}, journal = {Journal of Nuclear Medicine Technology} }