PT - JOURNAL ARTICLE ED - Society of Nuclear Medicine TI - Placement DP - 1991 Mar 01 TA - Journal of Nuclear Medicine Technology PG - 19A--20A VI - 19 IP - 1 4099 - http://tech.snmjournals.org/content/19/1/19A.short 4100 - http://tech.snmjournals.org/content/19/1/19A.full SO - J. Nucl. Med. Technol.1991 Mar 01; 19