title: Letter: Eye colour and oculocardiac reflex.
mesh_terms: D000293:Adolescent; D000328:Adult; D002648:Child; D002675:Child, Preschool; D003116:Color; D005123:Eye; D005260:Female; D006339:Heart Rate; D006801:Humans; D007223:Infant; D007498:Iris; D008297:Male; D008875:Middle Aged; D011229:Preanesthetic Medication; D011674:Pulse; D012018:Reflex