The workshop will take place in conjunction with the Pediatric Radiation Oncology Society biennual congress in Slovenia from June 24-27, 2015. The aim of workshop will be to provide education to up to 20 radiation oncologist practicing in low- and middle-income countries in basic radiotherapy techniques applicable to children treated in resource-constrained enviroment. Participants will be selected by the PROS Scientific Committee based on a submitted abstract, which should explain the current state of pediatric radiation oncology in their country, their expectations with respect to the training received at the workshop, and their plans for implementation and utilization of acquired knowledge. The home institutions will be required to submit a letter of support of their candidates in pediatric radiation oncology program development following the workshop. Candidates will be also asked to submit one or 2 cases without patient identifiers for building teaching materials around them.