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Table 1 Search strategy to be used for MEDLINE electronic database

From: The effects of amino acid/protein supplementation in hemodialysis patients: study protocol for a systematic review and meta-analysis

Database   Search strategy
MEDLINE (PubMed) #1 Hemodialysis Units, Hospital[MeSH] OR Renal Dialysis[MeSH]
  #2 h*emodialysis OR h*emofiltration OR h*emodiafiltration OR dialysis
  #3 end* AND (kidney disease* OR renal disease* OR renal insufficiency OR kidney failure OR renal failure)
  #4 ESRF OR ESKF OR ESRD OR ESKD
  #5 #1 OR #2 OR #3 OR #4
  #6 “nutrition supplement” OR “nutrition supplementary” OR “nutrition supplementation” OR “nutrition supplemental” OR “nutrition supple-mentation” OR “oral supplement” OR “oral supplementary” OR “oral supplementation” OR “oral supplemental” OR “oral supple-mentation” OR “nutrition support” OR “nutrition intervention” OR “nutrition status” OR “nutritional supplement” OR “nutritional supplementary” OR “nutritional supplementation” OR “nutritional supplemental” OR “nutritional supple-mentation” OR “nutritional support” OR “nutritional intervention” OR “nutritional status” OR “nutrient supplement” OR “nutrient supplementary” OR “nutrient supplementation” OR “nutrient supplemental” OR “nutrient supple-mentation” OR “nutrient support” OR “nutrient intervention” OR “nutrient status” OR “nutritionally supplement” OR “nutritionally supplementary” OR “nutritionally supplementation” OR “nutritionally supplemental” OR “nutritionally supple-mentation” OR “nutritionally support” OR “nutritionally intervention” OR “nutritionally status”
  #7 amino OR "amino acids" OR protein* OR BCAA OR "branch chain amino acid" OR leucine* OR isoleucine* OR valine*
  #8 #6 OR #7
  #9 Randomized Controlled Trial[MeSH]
  #10 Randomized Controlled Trials as Topic[MeSH]
  #11 Random Allocation[MeSH]
  #12 #9 OR #10 OR #11
  #13 #5 AND #8 AND #12