1) Keyword

Boolean function

2) Keyword

Hits per Database

low back pain

AND

diathermy

PubMed: n = 10

PEDro: n = 12

CENTRAL: n = 23

CINHAL: n = 14

fango packs

PubMed: n = 0

PEDro: n = 0

CENTRAL: n = 0

CINHAL: n = 0

heat application

PubMed: n = 0

PEDro: n = 1

CENTRAL: n = 1

CINHAL: n = 32

heat plaster

PubMed: n = 1

PEDro: n = 0

CENTRAL: n = 0

CINHAL: n = 1

heat wrap

PubMed: n = 4

PEDro: n = 5

CENTRAL: n = 8

CINHAL: n = 16

hot packs

PubMed: n = 4

PEDro: n = 5

CENTRAL: n = 21

CINHAL: n = 16

hyperemic cream

PubMed: n = 0

PEDro: n = 0

CENTRAL: n = 0

CINHAL: n = 0

hyperemic gel

PubMed: n = 0

PEDro: n = 0

CENTRAL: n = 0

CINHAL: n = 0

hyperemic ointment

PubMed: n = 0

PEDro: n = 0

CENTRAL: n = 0

CINHAL: n = 0

hyperemic products

PubMed: n = 0

PEDro: n = 0

CENTRAL: n = 0

CINHAL: n = 0

hyperemia induced

PubMed: n = 13

PEDro: n = 0

CENTRAL: n = 12

CINHAL: n = 9

mud packs

PubMed: n = 1

PEDro: n = 0

CENTRAL: n = 1

CINHAL: n = 1

thermal therapy

PubMed: n = 5

PEDro: n = 8

CENTRAL: n = 6

CINHAL: n = 15

thermotherapy

PubMed: n = 4

PEDro: n = 3

CENTRAL: n = 13

CINHAL: n = 4

topical hyperemic products

PubMed: n = 0

PEDro: n = 0

CENTRAL: n = 0

CINHAL: n = 0

topical warming product

PubMed: n = 0

PEDro: n = 0

CENTRAL: n = 0

CINHAL: n = 0

ultrasonic therapy

PubMed: n = 9

PEDro: n = 30

CENTRAL: n = 27

CINHAL: n = 24

warming products

PubMed: n = 0

PEDro: n = 0

CENTRAL: n = 0

CINHAL: n = 0

warming application

PubMed: n = 0

PEDro: n = 0

CENTRAL: n = 0

CINHAL: n = 0