PT - JOURNAL ARTICLE AU - M. W. Billinghurst AU - R. F. Palser TI - The Authors' Reply DP - 1975 May 01 TA - Journal of Nuclear Medicine PG - 440--440 VI - 16 IP - 5 4099 - http://jnm.snmjournals.org/content/16/5/440.1.short 4100 - http://jnm.snmjournals.org/content/16/5/440.1.full SO - J Nucl Med1975 May 01; 16