@OmicronData @hsom113 @BallouxFrancois @Fiona_M_Russell Here's one that popped up in google. Not sure if it is the same one I saw but results seem in the same ballpark.
https://www.bmj.com/content/37...
@OmicronData @hsom113 @BallouxFrancois @Fiona_M_Russell 这是谷歌中突然出现的一个。不确定它是否与我看到的相同，但结果似乎在同一个范围内。
https://www.bmj.com/content/37...