[1] Johns Hokpins Sch Med, Johns Hopkins PET Ctr, Baltimore, MD USA
[2] Johns Hopkins Med Inst, Baltimore, MD 21205 USA
[3] Univ Maryland, Baltimore, MD 21201 USA
[4] Univ Maryland, Med Ctr, Parkton, MD USA
[5] Univ Maryland, Med Ctr, Baltimore, MD 21201 USA
[6] Univ Maryland, Med Ctr, Columbia, MD USA
[7] Univ Maryland, Sch Med, Baltimore, MD 21201 USA
[8] Univ Maryland, Sch Med, Dept Diagnost Radiol & Nucl Med, Baltimore, MD 21201 USA