After obtaining his degree in psychology in 1997 at University Autonoma of Madrid, Saúl Marín Esteban started to collaborate with the ALS unit. He also obtained a degree in physiotherapy in 2004 at University CEU San Pablo. He has great experience in trial coordination, performing clinical evaluations such as ALSFRS-r, HHD and SVC testing, as well as neuropsychological and quality of life assessments (ECAS, C-SSRS, ALSQ40, EQ-5D-5L).