An additional quality assurance stage was introduced in the production of the synthesis, to ensure that the research questions were addressed appropriately by the literature items that were obtained.
Cyflwynwyd cam sicrhau ansawdd ychwanegol wrth gynhyrchu’r synthesis, er mwyn sicrhau bod y cwestiynau ymchwil yn cael eu hateb yn briodol gan yr eitemau llenyddiaeth a gafwyd.