I12 Health Behavior, C93 Field Experiments, D85 Network Formation and Analysis: Theory
I11, I13, C21
D14, D84, G22, I13
I13, I18, D14, D18, G41
I13, I15, O18, I12, Q53
I11, I12, I13, I18
Health Behavior
I12, I13, I14, I18, J61, Z13
Making, H75 State and Local Government: Health; Education; Welfare; Public Pensions, I21 Analysis
I13, I14, I18