Super ring modern circumcision training with free needle injection anesthesia in improving the skills of health workers. Community Empowerment, [S. l.], v. 7, n. 6, p. 994–998, 2022. DOI: 10.31603/ce.7167. Disponível em: https://coba.unimma.ac.id/ce/article/view/7167. Acesso em: 30 sep. 2026.