As regards Naomi Bar-Yam's request on Lactnet:  The old Jakobssen & Lindberg reference is still a good one to use.
    With artificial feeding, an *additional* situation which arises is the parents' inclination to keep switching the product used.  The most extreme example of this I've encountered involved a Mum who, after trying 6 products, had narrowed her choice down to 2 - one on which the baby seemed settled (on mother's report) but "wasn't gaining", and another on which the baby was gaining heaps but was unsettled.  By that stage, she was really confused!
    When Mums keep switching, they are of course muddying the waters.  Who's to know whether the behaviour reported is an immediate effect of a new product tried, or a delayed effect of the previous one?  This adds a whole new dimension to the issue of colic and artificial feeding, which needs to be kept in mind.  A question needs to be included, in any future study, about whether the artificial feeding product has beeen changed.
      Best wishes,
               Virginia

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