Your participation in the survey is voluntary and if you do not wish to take part, your details will be deleted from the database held by Miller Research and Beaufort research.
Rydych yn cymryd rhan yn wirfoddol ac os nad ydych chi’n dymuno cymryd rhan, bydd eich manylion yn cael eu dileu o’r gronfa ddata a ddelir gan Miller Research a Beaufort Research.