Single versus multiple deficiencies of methionine, zinc, riboflavin, vitamin B-6 and choline elicit surprising growth responses in young chicks. - Baker, David H.; Edwards, Hardy M.; Baker, D H; Edwards, H M 3rd; Strunk, C S; Emmert, J L; Peter, C M; Mavromichalis, I; Parr, T M (Journal of Nutrition, 1999)