[1] . Aubert JP et al. J Clin Invest 1963;42(6):885-897.
[2] . Neer R et al. Clin Invest,1967;46:1364-1379.
[3] . Sandler RB et al. Am J Clin Nutr,1985;42:270-274.
[4] . Laura SII et al. Pediatr Res,1988;23(6):589-594.
[5] . Judy ZM et al. Clin Chim Acta,1989;183:107-113.
[6] . Marshall DH et al. Clin Sci,1981;61:477-481.
[7] . Francis RM et al. Am J Clin Nutr,1986;43:72-76.
[8] . Susan IF et al. Br J Nutr,1989,62:379-388.
[9] . Heaney RP et al.J Clin Endocrinol,1958 18:1246-1267.
[10] . Lazor MZ et al.J Clin Invest,1963;42:1238-1247.
[11] . Larry J M et al. Pediatr Res,1985;19(4):329-334.
[12] . Berman M et al. 1978 SAAM Manual,USDHEW Publication No. (NIH)78-180,Washington,DC.
[13] . Vergey AL et al. Can J Physiol PLarmacol,1990;68:974-976.
[14] . Roger IP et al.Biomed Environ Mass Spectrom,1990;19:353-359.
[15] . Steven AA et al. J Pediatr Gastrocntef Nutr,1991;12:469-473.
[16] . Stevea AA et al. Pediatf Res,1991;29(6):615-618.
[17] . Subhash C et al. Proc Natl Acad Sei,1990;37(8):5715-5719.