Worldwide, Hailun (Hailun 
) is a rare gender-neutral given name. The forename Hailun is characteristic of China, where it is an extremely rare epicene name, the United States, and India. Much less frequently, Hailun is the last name as well as the forename.
| VARIANT | COUNTRY |
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| Hailun | China, Spain, Australia, United States, India |
| hailun ni researcher (ORCID 0000-0002-7805-8064) |
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| hailun zheng Ph.D. University of Washington 2017 |
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| hailun liang researcher (ORCID 0000-0002-9917-411X) |
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| hailun qin researcher (ORCID 0000-0002-7267-3162) |
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| hailun peng researcher |
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| hailun fan researcher (ORCID 0000-0003-2901-6906) |
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| hailun pan researcher |
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| hailun wang researcher (ORCID 0000-0001-8651-2856) |
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| hailun jiang researcher |
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| hailun liu researcher |
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| hailun zhan researcher |
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| hailun wang researcher (ORCID 0000-0003-1200-460X) |
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| hailun he researcher (ORCID 0000-0002-2997-8446) |
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| hailun zheng researcher |
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