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Unless otherwise stated, search terms are free text terms; MesH = Medical subject heading (Medline medical index term); exp = exploded MeSH; the dollar sign ($) stands for any character(s); the question mark (?) = to substitute for one or no characters; tw = text word; pt = publication type; sh = MeSH; adj = adjacent. DIABETES MELLITUS AND DIABETIC NEPHROPATHY 1. Diabetes Mellitus, Type 1/co, pp, dh 2. Diabetes Mellitus, Type 2/co, pp, dh 3. Diabetic Nephropathies/co, pp, dh, pc, dt 4. Kidney Failure, Chronic/co, pp, pc, dh 5. microalbuminuria.tw. 6. Albuminuria/pc,ur 7. Kidney/pp 8. diabetes.tw. 9. diabetic nephropath$.tw. 10. kidney disease$.tw. 11. renal failure.tw. 12. renal disease$.tw. 13. Glomerular Filtration Rate/de, ph 14. glomerular filtration rate.tw. 15. Creatinine/ 16. creatinine.tw. MODIFIED/RESTRICTED PROTEIN DIET 1. Dietary Proteins/ad, pd, tu 2. protein.tw. 3. diet.tw. 4. Diet, Protein‐Restricted/ 5. Dietary Supplements/