Director of Epidemiology, RTI Health Solutions;
Visiting Scientist, Department of Epidemiology, Harvard T.H. Chan School of Public Health
![](https://causalab.sph.harvard.edu/wp-content/uploads/sites/148/2021/06/Xabi.jpg)
Director of Epidemiology, RTI Health Solutions;
Visiting Scientist, Department of Epidemiology, Harvard T.H. Chan School of Public Health