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: How to Avoid Customer Churn in Health Insurance/Plans? A Machine Learn Approach. CBMS 2019: 559-562