TY - JOUR A1 - Attanasio, O. A1 - Fernandez, C. A1 - Grantham-McGregor, S. A1 - Meghir, C. A1 - Rubio-Codina, M. T1 - Using the infrastructure of a conditional cash transfer program to deliver a scalable integrated early child development program in Columbia: Cluster Randomized Control Trial Y1 - 2014 DO - 10.1136/bmj.g5785 VL - 349 ER -