PT - JOURNAL ARTICLE AU - Peter E. Valk AU - James McRae TI - The Authors' Reply DP - 1974 Apr 01 TA - Journal of Nuclear Medicine PG - 319--319 VI - 15 IP - 4 4099 - http://jnm.snmjournals.org/content/15/4/319.short 4100 - http://jnm.snmjournals.org/content/15/4/319.full SO - J Nucl Med1974 Apr 01; 15