Aasheim, Erlend Tuseth Vitamin status after gastric bypass and lifestyle intervention: a comparative prospective study. [electronic resource] - Surgery for obesity and related diseases : official journal of the American Society for Bariatric Surgery - 169-75 p. digital Publication Type: Clinical Trial; Comparative Study; Journal Article; Research Support, Non-U.S. Gov't ISSN: 1878-7533 Standard No.: 10.1016/j.soard.2011.01.038 doi Subjects--Topical Terms: AdultAvitaminosis--bloodCase-Control StudiesDietary SupplementsFemaleGastric Bypass--adverse effectsHumansLife StyleMaleMiddle AgedNutritional StatusObesity, Morbid--bloodProspective StudiesVitamins--administration & dosage