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@conorjmcclure @JOSPT I'm afraid I have source amnesia. You may want to read Freedman et al. Here are some references I like in this genre: https://t.co/qF5Vs4eXta https://t.co/wPqA5FhpB6 https://t.co/v262pEbi1y https://t.co/6a6hx0tVyh https://t.co/FfUB2oC