TY - JOUR T1 - When is a certification not a certification? JF - Journal of Nuclear Medicine Technology JO - J. Nucl. Med. Technol. SP - 234 LP - 235 VL - 27 IS - 3 AU - E L Palmer Y1 - 1999/09/01 UR - http://tech.snmjournals.org/content/27/3/234.abstract ER -