N/D= "Amount not determinable due to lack of data of adverse effects. Source of intake should be from food only to prevent high levels of intake" (see Dietary Reference Intakes: Vitaminsเก็บถาวร 2011-10-02 ที่ เวย์แบ็กแมชชีน. The National Academies, 2001).
Plain type indicates Adequate Intakes (A/I). "The AI is believed to cover the needs of all individuals, but a lack of data prevent being able to specify with confidence the percentage of individuals covered by this intake" (see Dietary Reference Intakes: Vitaminsเก็บถาวร 2011-10-02 ที่ เวย์แบ็กแมชชีน. The National Academies, 2001).
N/D= "Amount not determinable due to lack of data of adverse effects. Source of intake should be from food only to prevent high levels of intake" (see Dietary Reference Intakes: Vitaminsเก็บถาวร 2011-10-02 ที่ เวย์แบ็กแมชชีน. The National Academies, 2001).
Plain type indicates Adequate Intakes (A/I). "The AI is believed to cover the needs of all individuals, but a lack of data prevent being able to specify with confidence the percentage of individuals covered by this intake" (see Dietary Reference Intakes: Vitaminsเก็บถาวร 2011-10-02 ที่ เวย์แบ็กแมชชีน. The National Academies, 2001).
Maton, Anthea; Jean Hopkins; Charles William McLaughlin; Susan Johnson; David LaHart; Jill D. Wright (1993). Human Biology and Health. Englewood Cliffs, New Jersey, USA: Prentice Hall. ISBN0-13-981176-1. OCLC32308337.