title: Letter: Radiation exposure during cardiac catheterisation.
mesh_terms: D000367:Age Factors; D006328:Cardiac Catheterization; D002648:Child; D002675:Child, Preschool; D002869:Chromosome Aberrations; D006801:Humans; D007223:Infant; D011859:Radiography / Q000009:adverse effects*; D013601:T-Lymphocytes / Q000528:radiation effects*