Mingguang He and Guangzhou Free People Check 

( I'm Mingguang He)
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More time outside tied to less nearsightedness in children | Reuters

www.reuters.com
“There were some studies suggesting the protective effect of outdoor time in the development of myopia, but most of this evidence is from cross-sectional studies (survey) data that suggest 'association' instead of causality,” said lead author Dr. Mingguang He of Sun Yat-sen University in Guangzhou.

Can More Outside Time Help Kids' Eyesight? - Consumer HealthDay

consumer.healthday.com
This difference was less than anticipated, said the study's authors, led by Dr. Mingguang He of Sun Yat-sen University in Guangzhou. "However, it is clinically important because small children who develop myopia early are most likely to progress to high myopia, which increases the risk of pathological ...
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