39	back pain
40	"coccydynia"
41	(MH "Lumbar Vertebrae")
42	lumbar N2 vertebra
43	S36 or S37 or S38 or S39 or S40 or S41 or S42
44	(MH "Thoracic Vertebrae")
45	(MH "Spondylolisthesis") OR (MH "Spondylolysis")
46	"lumbago"
47	S44 or S45 or S46
48	S35 or S43 or S47
49	S28 and S48
50	(MH "Exercise+")
51	(MH "Physical Activity")
52	(MH "Physical Fitness+")
53	(MH "Physical Therapy+")
54	(MH "Therapeutic Exercise+")
55	McKenzie or Alexander or William or Feldenkrais
56	(MH "Structural‐Functional‐Movement Integration+")
57	(MH "Alexander Technique")
58	(MH "Feldenkrais Method")
59	("yoga") or (MH "Yoga")
60	(MH "Recreation+")
61	(MH "Pilates") or pilates
62	(MH "Tai Chi") or Tai Chi or Tai Ji or Taiji or Taijiquan
63	exercise
64	S50 OR S51 OR S52 OR S53 OR S54 OR S55 OR S56 OR S57 OR S58 OR S59 OR S60 OR S61 OR S62 OR S63
65	S49 AND S64
66	(MH "Williams Syndrome")
67	"alexander disease"
68	S66 OR S67
69	S65 not S68