Car-sickness in twins.
D000367:Age Factors; D001336:Automobiles; D001789:Blood Group Antigens; D002648:Child; D002675:Child, Preschool; D004200:Diseases in Twins; D005260:Female; D006801:Humans; D008297:Male; D009041:Motion Sickness / Q000150:complications / Q000235:genetics*; D012737:Sex Factors
D001789:Blood Group Antigens