How to make pagan and hall test of heteroskedasticity for panel data?

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How to make pagan and hall test of heteroskedasticity for panel data?

Qian Yu
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Dear all
       How to make pagan and hall test of heteroskedasticity for panel data? I found that " ivhettest" could only be used for cross-section dataset, while not panel data? Then which command is used for test heteroskedasticity for Panel data?

Many thanks,
Qian