Source:
Optometry and vision science : official publication of the American Academy of Optometry [Optom Vis Sci] 2011 May; Vol. 88 (5), pp. 613-20.Publisher: Lippincott Williams & Wilkins Country of Publication: United States NLM ID: 8904931 Publication Model: Print Cited Medium: Internet ISSN:
Source:
Canadian Medical Association journal [Can Med Assoc J] 1965 Feb 27; Vol. 92, pp. 465-8.Publisher: Canadian Medical Association Country of Publication: Canada NLM ID: 0414110 Publication Model: Print Cited Medium: Print ISSN: