约翰霍普金斯大学布隆伯格公共卫生学院的社会流行病学家托马斯·格拉斯说:“大多数专家都认为这些变化与环境有关。”
"Most experts agree that the changes were related to something in the environment," says social epidemiologist Thomas Glass of The Johns Hopkins Bloomberg School of Public Health.
约翰霍普金斯大学布隆伯格公共卫生学院的社会流行病学家托马斯·格拉斯说:“大多数专家都认为这些变化与环境有关。”
"Most experts agree that the changes were related to something in the environment," says social epidemiologist Thomas Glass of The Johns Hopkins Bloomberg School of Public Health.
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