TY - JOUR T1 - Of Models and Men JF - Journal of Nuclear Medicine JO - J Nucl Med SP - 940 LP - 942 VL - 18 IS - 9 AU - Samuel E. Halpern Y1 - 1977/09/01 UR - http://jnm.snmjournals.org/content/18/9/940.abstract N2 - 300 Multiple ChoicesThis is a pdf-only article and there is no markup to show you.full-text.pdf ER -