Cluster 171: anti cancer therapy prior systemic treatment investigational weeks study days 
Cluster 416: signs symptoms infection weeks cycle day prior treatment study active 
Cluster 1464: therapy herbal cycle week day prior anticancer weeks contraceptives radiotherapy 
Cluster 1743: cycle day prior weeks days therapy treatment investigational chemotherapy anti 
Cluster 1784: therapy days investigational anti neoplastic dose biologic prior agent chemotherapy