Friska Sembiring, Murni Sari Dewi Simanullang, and Larry Gilbert Purba, “The Ipswich Touch Test (IpTT) Method for Early Detection of Neuropathy in Patients with Type 2 Diabetes Mellitus at General Practice of Dr. Rewin Dhillon, MBBS, Berastagi”, JPIKes, vol. 6, no. 1, pp. 266–276, Mar. 2026.