Sharlene Here is a link to the Almroth paper - another from 1990 - that I remember! Hope this helps too! https://academic.oup.com/trstmh/article-abstract/84/4/602/1916687?redirectedFrom=fulltext Thanks to Pat for contributing so thoroughly to this thread too - I'm seeing what she said as I'm scrolling down! Pamela Morrison, IBCLC Rustington, England <https://www.avast.com/sig-email?utm_medium=email&utm_source=link&utm_campaign=sig-email&utm_content=webmail> Virus-free. www.avast.com <https://www.avast.com/sig-email?utm_medium=email&utm_source=link&utm_campaign=sig-email&utm_content=webmail> <#DAB4FAD8-2DD7-40BB-A1B8-4E2AA1F9FDF2> *********************************************** Archives: http://community.lsoft.com/archives/LACTNET.html To reach list owners: [log in to unmask] Mail all list management commands to: [log in to unmask] COMMANDS: 1. To temporarily stop your subscription write in the body of an email: set lactnet nomail 2. To start it again: set lactnet mail 3. To unsubscribe: unsubscribe lactnet 4. To get a comprehensive list of rules and directions: get lactnet welcome