Neither was there any difference in the AUC between those with or without autonomic neuropathy (29502.5 [9377.3–65353.4] and 30536.7 [10605.1–56321.3] for oxytocin, respectively; p = 0.743; and 423.0 [274.2–661.0] and 305.1 [258.4–369.0] for CCK, respectively; p = 0.195). Here, CCK is linked to autonomic neuropathy.