Sharma, R.; Kumar, K.; Saini, L.; Dhiman, D.; Ghai, B.; Suri, V.; Singh, S. M.; Mohendra, R.; Tyagi, P.; Prasad Barre, V.; Gupta, N. Impact of Social Isolation During COVID-19 on Psychological Well-Being of the Elderly: An Indian Survey-Based Study. Int J Community Med Public Health 2021, 8, 4848-4856.