same participants on different scanners

[bpinsard]

It seems from demographics/weight that some site with multiple scanners (eg. beijing) acquired the same participants on multiple scanners, but are stored as different participants, is this documented?

It is related to #102

It could greatly influence results depending on the type of analysis one want to run.

[jcohenadad]

Thank you for catching this @bpinsard. I'm closing this issue since it's a duplicate, but added a comment to revive the issue #102 (comment)