Varshney, G.P., Varshney, S., Varshney, A.R., Varshney, A. and Dayal, A. 2022. Study of indications, techniques and results of operations on the sympathetic nervous system. International journal of health sciences. 6, S1 (Apr. 2022), 5107–5114. DOI:https://doi.org/10.53730/ijhs.v6nS1.6149.