Table 1.

Search strategy (PubMed).

Order	Strategy
#1	Search “Spondylitis, Ankylosing” [Mesh]
#2	Search ((((Ankylosing Spondylitis[Title/Abstract]) OR Ankylosing Spondylarthritis [Title/Abstract]) OR Spondyloarthritis Ankylopoietica [Title/Abstract]) OR Spondylarthritides, Ankylosing[Title/Abstract]
#3	#1 OR #2
#4	Search “Acupuncture” [Mesh] OR “Moxibustion” [Mesh]
#5	Search (((((Acupuncture[Title/Abstract]) OR Acupuncture Therapy[Title/Abstract]) OR Moxibustion[Title/Abstract]) OR Du moxibustion[Title/Abstract]) OR Long snake moxibustion[Title/Abstract])
#6	#4 AND #5
#7	Search “Systematic Reviews as Topic” [Mesh] OR “Systematic Review” [Publication Type]
#8	Search (((((Systematic Reviews[Title/Abstract]) OR systematic review[Title/Abstract]) OR SR[Title/Abstract]) OR SRs[Title/Abstract]) OR review[Title/Abstract]
#9	Search “Meta-Analysis as Topic” [Mesh] OR“Meta-Analysis” [Publication Type]
#10	#7 OR #8 OR #9
#11	#3 AND #6 AND #10