Cancer Treatment in Childhood: What are the Risks to Future Generations?

The following study, "Does Cancer Treatment in Childhood Induce Transgenerational Genetic Damage?", gives reasons for optimism:

http://jco.ascopubs.org/content/early/2011/12/12/JCO.2011.39.4296.full.pdf+html?cmpid=jco_pap_12December2011