I got this message from my list and I don't know what a concealed subscriber is.
 

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* Total number of "concealed" subscribers: 68

* Total number of users subscribed to the list: 74984 (non-"concealed" only)

* Total number of local host users on the list: 4 (non-"concealed" only)

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Can anyone help?

Margaret J. Brandt
MMS/NEJM
Technology Projects Coordinator
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