Proxy markers of serum retinol concentration, used alone and in combination, to assess population vitamin A status in Kenyan children: a cross-sectional study

Elise F Talsma ; Hans Verhoef ; Inge D Brouwer ; Anne S Mburu-de Wagt ; Paul JM Hulshof ; Alida Melse-Boonstra ; (2015) Proxy markers of serum retinol concentration, used alone and in combination, to assess population vitamin A status in Kenyan children: a cross-sectional study. BMC medicine, 13 (1). 30-. ISSN 1741-7015 DOI: 10.1186/s12916-014-0256-5