Brief psychological intervention for suicide prevention based on problem-solving applied in different formats to people over 50 years old: protocol for a randomized controlled trial. - Vázquez, Fernando L.; Torres, Ángela J.; Blanco, Vanessa; Bouza, Queila; Otero, Patricia; Andrade, Elena; Simón, Miguel Á.; Bueno, Ana M.; Arrojo, Manuel; Páramo, Mario; Fernández, Alba (BMC Psychiatry, 2024)