How to Avoid Customer Churn in Health Insurance/Plans? A Machine Learn Approach. - Jefferson Henrique Camelo Soares; Jardeson Leandro Nascimento Barbosa; Lucas Araújo Lopes; Gilvan Veras Magalhães Júnior; Ricardo de Andrade Lira Rabelo; Erick Baptista Passos; Pedro de Alcântara dos Santos Neto (CBMS, 2019)