These journals are well respected in the biological community, from what I know. How it is interpreted might be another story. I found the article you were looking for. I hope the link works!
http://onlinelibrary.wiley.com/doi/10.1002/ajhb.20941/pdf
Powe, C.E., Knott, C.D., & Conklin-Brittain, N. (2009). Infant sex predicts breast milk energy content. American Journal of Human Biology, 22(1), Retrieved from http://onlinelibrary.wiley.com/doi/10.1002/ajhb.20941/pdf doi: 10.1002/ajhb.20941
Sincerely,
Carolyn Putnam
LLLL, WIC Peer Counselor Coordinator
Denton, TX
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