Table 1: Search strategies.

DatabaseSearching strategiesHits

PubMed (1966 2012.8)P: (“Kidney diseases” Mesh OR “Glomerulonephritis, Membranous” Mesh OR “Glomerulonephritis, IGA” Mesh OR “Glomerulonephritis” Mesh OR “Glomerulonephritis, Membranoproliferative” Mesh OR “Glomerulosclerosis, focal segmental” Mesh OR “Glomerulonephritis” text word OR “nephrosis, lipoid” MeSH terms OR (“nephrosis” all fields AND “lipoid” all fields ) OR “lipoid nephrosis” all fields OR (“minimal” all fields AND “change” all fields AND “nephropathy” all fields ) OR “minimal change nephropathy” all fields OR “nephropathy” text word OR “Glomerulo*” text word OR “nephrotic syndrome” Mesh OR “nephr*” text word ) 
I: “Huang Qi” supplementary concept OR “Huang Qi” all fields OR “huang qi” all fields OR “astragalus membranaceus” MeSH terms OR (“astragalus” all fields AND “membranaceus” all fields ) OR “astragalus membranaceus” all fields   
C: other therapies
O: (“respiratory tract infections” [MeSH terms] OR “respiratory tract infections” [all fields] OR “upper respiratory infection” [all fields])
P + I = 59
P + I Filters: Humans = 24
P + I + O = 0

EMBASE (1974 2012.8)P: #1 OR #2 OR #3 OR #4 OR #5 OR #6
#1 nephrotic AND (“syndrome”/exp OR syndrome)
#2 “kidney”/exp OR kidney AND (“diseases”/exp OR diseases)
#3 “glomerulonephritis”/exp OR glomerulonephritis
#4 “glomerulosclerosis”/exp OR glomerulosclerosis
#5 “nephrosis”/exp OR nephrosis
#6 “nephropathy”/exp OR nephropathy
#5 “nephrosis”/exp OR nephrosis
#4 “glomerulosclerosis”/exp OR glomerulosclerosis  
I: #1 OR #2 OR #3 OR #4 OR #5
#1 “astragalus”
#2 “huangqi”
#3 “Astragalus extract”/exp
#4 “Astragalus membranaceus”/exp
#5 “Astragalus membranaceus extract”/exp
C: other therapies
O:
#1 respiratory AND (“infection”/exp OR infection)
#2 “respiratory tract infections”/exp OR “respiratory tract infections”
P + I = 266
Limited human 120
P + I + O = 17

Cochrane Library (Issue 5, 2012)Searching field: title, abstract, or keywords
P: “Kidney diseases” OR “Membranous Glomerulonephritis” OR “Glomerulonephritis” OR “lipoid nephrosis” OR “minimal change nephropathy” OR “minimal change disease” OR “nephrotic syndrome” OR “nephr*”  
I: “Huang Qi” OR “astragalus membranaceus”
C: other therapies
O: (“respiratory tract infections” OR “respiratory tract infections” OR “upper respiratory infection”)
P: 37
P + I = 3

CBM (1978 2012.8) Subject or title or abstract: Nephritic syndrome AND respiratory infection30

CNKI (1979 2012.8)Subject or title or abstract: Nephritic syndrome AND respiratory infection301

VIP (1989 2012.8)Title or keyword: Nephritic syndrome AND respiratory infection25

*Refers to searching for all terms that begin with a word, enter the word followed by an asterisk (*).