Effects of urbanisation and seasons on the relationship between frozen road conditions and road traffic injury: a longitudinal study of national emergency medical service data in South Korea

• Jun Hee WonSeoul National University Hospital
• Jaehong YoonSeoul National University Hospital
• Joo JeongSeoul National University
• Younshik ChungYeungnam University
• Sangjin HanSeoul National University
• Young Sun RoSeoul National University
• Ja‐Ho LeighSeoul National University