Colour-blindness detective story not so simple.
Carroll
Joseph
J
D003118:Color Perception / Q000502:physiology; D003117:Color Vision Defects / Q000453:epidemiology* / Q000235:genetics; D005260:Female; D005838:Genotype; D014943:Global Health; D006801:Humans; D015994:Incidence; D008297:Male