PT - JOURNAL ARTICLE ED - , TI - Observer Variability: What to Do until Perfect Diagnostic Tests are Invented DP - 1978 Jul 01 TA - Journal of Nuclear Medicine PG - 870--870 VI - 19 IP - 7 4099 - http://jnm.snmjournals.org/content/19/7/870.short 4100 - http://jnm.snmjournals.org/content/19/7/870.full SO - J Nucl Med1978 Jul 01; 19