Li and his colleagues studied 466 bike riders and found that those who had consumed four or five drinks were 20 times as likely to be seriously injured or killed.
درس لي وزملاؤه حالة ٤٦٦ راكب دراجة ووجد ان الذين شربوا اربع الى خمس كؤوس هم معرّضون اكثر بـ‍ ٢٠ مرة لإصابة خطيرة او مميتة .‏