TY - JOUR T1 - Letter to the Editor JF - Journal of Nuclear Medicine JO - J Nucl Med SP - 881 LP - 881 VL - 7 IS - 11 AU - George L. Jackson Y1 - 1966/11/01 UR - http://jnm.snmjournals.org/content/7/11/881.abstract N2 - 300 Multiple ChoicesThis is a pdf-only article and there is no markup to show you.full-text.pdf ER -