A. Fitri, M. Abdullah, I. Rengganis, H. Mihardja, I. S. Baginda, and A. Masthura, “Acupoint-catgut embedment combined with medication does not decrease interleukin-6 levels serum in patients with gastroesophageal reflux disease: a randomized controlled clinical trial”, Med J Indones, vol. 28, no. 3, pp. 241–5, Oct. 2019.