User flow diagram

flowchart TD
    A(Design) --> B{Survey objective?} 
    B --> C(Estimate prevalence) & D(Detect pathogen)
    C --> E{Survey mode?}
    E --> F(Identify cost-effective designs) & G(Calculate power of existing designs)
    F --> H{Collection strategy?}
    H --> I("Fixed sampling period (random)") & J("Fixed sample size (sN)")
    %% random
    I --> K{Pooling strategy?}
    K --> L(Target number) & M(Max size)
    L --> N{Clustered?}
    N --> O(Yes) & P(No)
    M --> Q{Clustered?}
    Q --> R(Yes) & S(No)
    %% sN
    J --> T{Clustered?}
    T --> U(Yes) & V(No)

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