Partridge, Mike, Tokihiro Yamamoto, Cai Grau, Morten Høyer, and Ludvig Paul Muren. 2010. “Imaging of Normal Lung, Liver and Parotid Gland Function for Radiotherapy”. Acta Oncologica 49 (7):997-1011. https://doi.org/10.3109/0284186X.2010.504735.