“…The risk factors for DP can be divided into perinatal risk factors and maternal risk factors, including a low education level, young maternal age, and bottle feeding. Perinatal/birth risk factors include first-born infants [10], supine positioning, premature birth, prolonged intubation, male gender, intrauterine restriction in multiple gestation pregnancies (fraternal twins > maternal twins) [8], breech position in uterus, primiparous mothers, assisted delivery, maternal age >35 years, birth trauma, congenital anomalies, a low activity level, delayed milestones, bottle feeding, and prolonged labor [7,11]. The patient in our study was an identical twin, corresponding to a known risk factor for DP.…”