[1] Univ Duisburg Essen, Univ Hosp Essen, Duisburg, Germany
[2] Univ Hosp Essen, Essen, Germany
[3] Univ Duisburg Essen, Univ Hosp Essen, Dept Nucl Med, Essen, Germany
[4] Univ Hosp Essen, Dept Nucl Med, Essen, Germany
[5] Univ Duisburg Essenp, Univ Hosp Essen, Duisburg, Germany