□ □
[□] □
□ □ □
If the setting is not occupational , a careful epidemiological history of those affected and those unaffected must be undertaken.Exposure to arsine gas is usually the result of an occupational accident ; in most cases , the worker presents rapidly and is brought in with the material safety data sheet ( MSDS ) . With the support and guidance of Prof. Owen Astrachan ( Computer Science , ECACS ) , a new site was created , this time one that was student-controlled but nevertheless had the support of Arts and Sciences technology and was still operational within the Duke University system . If you are compiling vitamin A contents of food for your data tables , it may be valuable to consult with the national food analytical laboratories for advice on the accuracy of the data from your references . As the residential complement of Stanford Introductory Studies ( SIS ) , the College connects residential life with the mentoring and academic activities offered through SIS courses . iPass Mobile Office provides IT managers with the peace of mind that they can centrally manage user policies for access , security and usage when they are connecting outside the office .