Nickoloff E (1988). "Schilling test: physiologic basis for and use as a diagnostic test". Crit Rev Clin Lab Sci. 26 (4): 263–76. doi:10.3109/10408368809105892. PMID3077032.
Nickoloff E (1988). "Schilling test: physiologic basis for and use as a diagnostic test". Crit Rev Clin Lab Sci. 26 (4): 263–76. doi:10.3109/10408368809105892. PMID3077032.