RT Journal Article SR Electronic T1 The Author's Reply JF Journal of Nuclear Medicine Technology JO J. Nucl. Med. Technol. FD Society of Nuclear Medicine SP 177 OP 177 VO 3 IS 3 A1 Mandell, Charles A1 Houle, Herta YR 1975 UL http://tech.snmjournals.org/content/3/3/177.abstract AB