Tobacco Online Policy Seminar (TOPS): https://www.tobaccopolicy.org/
     -Free online seminar series showcasing tobacco policy research using quasi-experimental and experimental methods
     -Bi-weekly

Virtual Seminar on the Economics of Risky Health Behaviors (VERB): https://www.human.cornell.edu/pam/research/hehbad/virtualseminars
     -Free online seminar series focusing on economic research on risky health behaviors
     -Weekly during the academic year

Electronic Health Economics Colloquium (EHEC): https://www.ehealthecon.org/
     -Free online seminar series focusing on health economics research
     -Monthly

Medicaid Insights Colloquium (MIC): https://www.medicaidinsightscolloquium.com/
     -Free online seminar series focusing on Medicaid policy and research   
    -Monthly

Chloe East's Metrics Discussion: https://www.chloeneast.com/metrics-discussions.html
     -Excellent resource for contemporary difference-in-differences methods

Taylor Wright's DID reading group: https://taylorjwright.github.io/did-reading-group/   
     -Excellent resource for contemporary difference-in-differences methods