Marpaung, S. C., Jusuf, N. K., & Putra, I. B. (2021). Comparison of brain-derived neurotrophic factor (BDNF) serum level in inflammatory and non-inflammatory acne vulgaris. Bali Medical Journal, 10(2), 659–662. https://doi.org/10.15562/bmj.v10i2.2438