Which of the following is not a proven risk factor for non-Hodgkin’s lymphoma? 

Which of the following is not a late toxicity of radiation therapy to the limb?

Tanning of the skin in the treatment area after a course of radiation therapy is caused by:

Which of the following components make up the outer surface of the bone?

Osteosarcomas occur most frequently in individuals between the age of:

Proton therapy is sometimes used in the treatment of ___ tumors. 

Adriamycin is a chemotherapeutic agent that is commonly associated with which of the following?

1 out of every ___ men will develop prostate cancer at some point in their life.

What is the most common site of bone metastasis?

If you want to compute clusters as a matrix, which function do you use in hierarchal clustering?