Describe the purpose and design of the Verstraeten et al study Safety of Thimerosal-Containing Vaccines: A Two-Phased Study of Computerized Health Maintenance Organization briefly. Describe how well the article meets the criteria for causality (see presentation and "Hill's criteria):
• Strength
• Consistency
• Specificity
• Temporality
• Biological Gradient
• Plausibility
• Coherence
Based on your critique, do you agree with the author's conclusions? Does exposure to thimersol via vaccines cause adverse neurological outcomes?