// Timeline data
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    {
        year: 1900,
        title: "SSA begins tracking mortality data",
        description: "Social Security Administration's Office of the Chief Actuary begins tracking historical death probabilities.",
        category: "policy"
    },
    {
        year: 1984,
        title: "Social Security disability standards updated",
        description: "Amendments mandate development of new disability standards for mental disorders.",
        category: "policy"
    },
    {
        year: 1991,
        title: "Corpus callosum findings in ADHD",
        description: "Hynd et al. identify smaller corpus callosum in children with ADHD.",
        category: "neuroimaging"
    },
    {
        year: 2002,
        title: "Brain volume reductions in ADHD",
        description: "Castellanos et al. find significant reductions in cerebral and cerebellar volumes in children with ADHD.",
        category: "neuroimaging"
    },
    {
        year: 2007,
        title: "Cortical thickness delay in ADHD",
        description: "Shaw et al. demonstrate children with ADHD reach peak cortical thickness ~3 years later.",
        category: "neuroimaging"
    },
    {
        year: 2017,
        title: "Brain volume confirmation",
        description: "Hoogman et al. confirm smaller brain volumes in ADHD through mega-analysis.",
        category: "neuroimaging"
    },
    {
        year: 2019,
        title: "27 genome-wide significant risk loci",
        description: "Demontis et al. identify genetic associations with ADHD.",
        category: "genetics"
    },
    {
        year: 2021,
        title: "International Consensus Statement",
        description: "Faraone et al. publish comprehensive review affirming ADHD as valid diagnosis.",
        category: "treatment"
    },
    {
        year: 2024,
        title: "Brain connectivity findings",
        description: "Norman et al. re-analyze fMRI data revealing altered connections in ADHD.",
        category: "neuroimaging"
    }
];

// Researchers data
const researchersData = [
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        contribution: "Longitudinal brain volume studies in ADHD",
        category: "neuroimaging"
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    {
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        contribution: "Cortical maturation delay in ADHD",
        category: "neuroimaging"
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    {
        name: "Hoogman et al.",
        contribution: "Mega-analyses of brain structure in ADHD",
        category: "neuroimaging"
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    {
        name: "Demontis et al.",
        contribution: "Genome-wide association studies in ADHD",
        category: "genetics"
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    {
        name: "Faraone et al.",
        contribution: "International consensus statements on ADHD",
        category: "treatment"
    }
];

// Cases data
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        description: "Case study illustrating genetic profile and disability claims process",
        category: "policy"
    },
    {
        name: "Shelley C. v. SSA",
        description: "Landmark case reversing SSA's denial of ADHD disability benefits",
        category: "policy"
    }
];

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