CENTRAL	MEDLINE (DataStar)	EMBASE (DataStar)	CINAHL (DataStar)
#1 RHINITIS ALLERGIC PERENNIAL single term (MeSH) #2 RHINITIS single term (MeSH) #3 RHINITI* #4 ALLERG* #5 ((#2 OR #3) AND #4) #6 ALLERGENS single term (MeSH) #7 MITES explode all trees (MeSH) #8 ANTIGENS single term (MeSH) #9 AIR POLLUTION INDOOR single term (MeSH) #10 DUST single term (MeSH) #11 ANTIGENS DERMATOPHAGOIDES single term (MeSH) #12 MITE* OR DUST* OR HDM OR PYROGLYPHIDAE OR EUROGLYPHUS OR DERMATOPHAGOIDES OR BLOMIA ADJ TROPICALIS OR NORISEN OR PHARMALGEN #13 #6 OR #7 OR #8 OR #9 OR #10 OR #11 OR #12 #14 #5 AND #13 #15 PRIMARY PREVENTION single term (MeSH) #16 BEDDING AND LINENS single term (MeSH) #17 FLOORS AND FLOORCOVERINGS single term (MeSH) #18 ENVIRONMENTAL EXPOSURE [pc] single term (MeSH) #19 MITE* NEAR PROOF OR MITE* NEAR IMPERMEABLE OR MITE* NEAR REDUC* OR MITE* NEAR ELIMINAT* OR MITE* NEAR DESTROY* OR MITE* NEAR EXTERMINAT* OR MITE* NEAR ERADICAT* OR MITE* NEAR REMOV* OR MITE* NEAR KILL* OR MITE* NEAR SPRAY* #20 CEDAR OR ACARICID* OR ACARACID* OR NEEM ADJ OIL OR NEEMOIL OR MARGOSA OR MITICIDE #21 BENZYL ADJ BENZOATE OR BENZYLBENZOATE OR BIOMAL OR MILBIOL OR NEEMOL OR SPINNRAD OR TN ADJ MP ADJ '100' OR NIMBASA #22 DWELLING* OR HOUSE* OR UPHOLSTER* OR PILLOW* OR MATTRESS* OR BED* OR CUSHION* OR COVER* OR ENCAS* OR SOFT ADJ FURNISHING* OR CARPET* OR FLOOR* OR CURTAIN* #23 #15 OR #16 OR #17 OR #18 OR #19 OR #20 OR #21 OR #22 #24 #14 AND #23 #25 RHINITIS ALLERGIC PERENNIAL [pc] single term (MeSH) #26 #24 OR #25	1. RHINITIS‐ALLERGIC‐PERENNIAL.DE. 2. RHINITIS.DE. OR RHINITI$1.TI,AB. 3. ALLERG$3.TI,AB. 4. 2 AND 3 5. 1 OR 4 6. MITES#.DE. 7. ALLERGENS.DE. 8. ANTIGENS.DE. 9. ANTIGENS‐DERMATOPHAGOIDES.DE. 10. DUST.DE. 11. AIR‐POLLUTION‐INDOOR.DE. 12. (MITE$1 OR DUST$1 OR HDM OR PYROGLYPHIDAE OR EUROGLYPHUS OR DERMATOPHAGOIDES OR BLOMIA ADJ TROPICALIS OR NORISEN OR PHARMALGEN).TI,AB. 13. 6 OR 7 OR 8 OR 9 OR 10 OR 11 OR 12 14. 5 AND 13 15. PRIMARY‐PREVENTION.DE. 16. BEDDING‐AND‐LINENS.DE. 17. FLOORS‐AND‐FLOORCOVERINGS.DE. 18. ENVIRONMENTAL‐EXPOSURE‐PC.DE. 19. (MITE$1 NEAR PROOF OR MITE$1 NEAR IMPERMEABLE OR MITE$1 NEAR REDUC$4 OR MITE NEAR ELIMINAT$3 OR MITE$1 NEAR DESTROY$3 OR MITE$1 NEAR EXTERMINAT$3 OR MITE$1 NEAR ERADICAT$3 OR MITE$1 NEAR REMOV$3 OR MITE$1 NEAR KILL$3 OR MITE$1 NEAR SPRAY$3).TI,AB. 20. (CEDAR OR ACARICID$2 OR ACARACID$2 OR NEEM ADJ OIL OR NEEMOIL OR MARGOSA OR MITICIDE).TI,AB. 21. (BENZYL ADJ BENZOATE OR BENZYLBENZOATE OR BIOMAL OR MILBIOL OR NEEMOL OR SPINNRAD OR TN ADJ MP ADJ '100' OR NIMBASAN).TI,AB. 22. (DWELLING$1 OR HOUSE$1 OR UPHOLSTER$2 OR PILLOW$1 OR MATTRESS$2 OR BED$3 OR CUSHION$1 OR COVER$4 OR ENCAS$4 OR SOFT ADJ FURNISHING$1 OR CARPET$3 OR FLOOR$3 OR CURTAIN$1).TI,AB. 23. 15 OR 16 OR 17 OR 18 OR 19 OR 20 OR 21 OR 22 24. 14 AND 23 25. RHINITIS‐ALLERGIC‐PERENNIAL‐PC.DE. 26. 24 OR 25	1. HOUSE‐DUST‐ALLERGY.DE. 2. PERENNIAL‐RHINITIS.DE. OR ALLERGIC‐RHINITIS.DE. 3. RHINITIS.DE. OR RHINITI$.TI,AB. 4. ALLERG$3.TI,AB. 5. 3 AND 4 6. 2 OR 5 7. HOUSE‐DUST‐ALLERGEN.DE. OR ALLERGEN.DE. 8. MITE#.DE. OR BLOMIA#.DE. 9. ANTIGEN.DE. 10. INDOOR‐AIR‐POLLUTION.DE. 11. DUST‐EXPOSURE.DE. OR HOUSE‐DUST.DE. 12. ENVIRONMENTAL‐EXPOSURE.DE. OR ENVIRONMENTAL‐FACTOR.DE. 13. (MITE$1 OR DUST$1 OR HDM OR PYROGLYPHIDAE OR EUROGLYPHUS OR DERMATOPHAGOIDES OR BLOMIA OR NORISEN OR PHARMALGEN).TI,AB. 14. 7 OR 8 OR 9 OR 10 OR 11 OR 12 OR 13 15. 6 AND 14 16. 1 OR 15 17. PRIMARY‐PREVENTION.DE. 18. BED.DE. OR CLOTHING.DE. 19. BUILDING.DE. OR FURNITURE.DE. 20. DUST‐CONTROL.DE. OR CLEANING.DE. 21. AVOIDANCE‐BEHAVIOR.DE. OR INSECT‐CONTROL.DE. 22. PROPHYLAXIS.DE. 23. (MITE$1 NEAR PROOF OR MITE$1 NEAR IMPERMEABLE OR MITE$1 NEAR REDUC$4 OR MITE NEAR ELIMINAT$3 OR MITE$1 NEAR DESTROY$3 OR MITE$1 NEAR EXTERMINAT$3 OR MITE$1 NEAR ERADICAT$3 OR MITE$1 NEAR REMOV$3 OR MITE$1 NEAR KILL$3 OR MITE$1 NEAR SPRAY$3).TI,AB. 24. ACARICIDE#.DE. OR NEEM‐OIL.DE. 25. (CEDAR OR ACARICID$2 OR ACARACID$2 OR NEEM ADJ OIL OR NEEMOIL OR MARGOSA OR MITICIDE).TI,AB. 26. (BENZYL ADJ BENZOATE OR BENZYLBENZOATE OR BIOMAL OR MILBIOL OR NEEMOL OR SPINNRAD OR TN ADJ MP ADJ '100' OR NIMBASAN).TI,AB. 27. (DWELLING$1 OR HOUSE$1 OR UPHOLSTER$2 OR PILLOW$1 OR MATTRESS$2 OR BED$3 OR CUSHION$1 OR COVER$4 OR ENCAS$4 OR SOFT ADJ FURNISHING$1 OR CARPET$3 OR FLOOR$3 OR CURTAIN$1).TI,AB. 28. 17 OR 18 OR 19 OR 20 OR 21 OR 22 OR 23 OR 24 OR 25 OR 26 OR 27 29. 16 AND 28 30. PERENNIAL‐RHINITIS‐PC.DE. 31. 29 OR 30	1. ALLERGIC‐RHINITIS.DE. 2. RHINITIS.DE. OR RHINITI$1.TI,AB. 3. ALLERG$3.TI,AB. 4. 2 AND 3 5. 1 OR 4 6. MITES#.DE. 7. ALLERGENS.DE. 8. ANTIGENS.DE. 9. DUST.DE. 10. AIR‐POLLUTION‐INDOOR.DE. 11. (MITE$1 OR DUST$1 OR HDM OR PYROGLYPHIDAE OR EUROGLYPHUS OR DERMATOPHAGOIDES OR BLOMIA ADJ TROPICALIS OR NORISEN OR PHARMALGEN).TI,AB. 12. 6 OR 7 OR 8 OR 9 OR 10 OR 11 13. 5 AND 12 14. BEDDING‐AND‐LINENS.DE. 15. FLOORS‐AND‐FLOORCOVERINGS.DE. 16. ENVIRONMENTAL‐EXPOSURE‐PC.DE. 17. (MITE$1 NEAR PROOF OR MITE$1 NEAR IMPERMEABLE OR MITE$1 NEAR REDUC$4 OR MITE NEAR ELIMINAT$3 OR MITE$1 NEAR DESTROY$3 OR MITE$1 NEAR EXTERMINAT$3 OR MITE$1 NEAR ERADICAT$3 OR MITE$1 NEAR REMOV$3 OR MITE$1 NEAR KILL$3 OR MITE$1 NEAR SPRAY$3).TI,AB. 18. (CEDAR OR ACARICID$2 OR ACARACID$2 OR NEEM ADJ OIL OR NEEMOIL OR MARGOSA OR MITICIDE).TI,AB. 19. (BENZYL ADJ BENZOATE OR BENZYLBENZOATE OR BIOMAL OR MILBIOL OR NEEMOL OR SPINNRAD OR TN ADJ MP ADJ '100' OR NIMBASAN).TI,AB. 20. (DWELLING$1 OR HOUSE$1 OR UPHOLSTER$2 OR PILLOW$1 OR MATTRESS$2 OR BED$3 OR CUSHION$1 OR COVER$4 OR ENCAS$4 OR SOFT ADJ FURNISHING$1 OR CARPET$3 OR FLOOR$3 OR CURTAIN$1).TI,AB. 21. 14 OR 15 OR 16 OR 17 OR 18 OR 19 OR 20 22. 13 AND 21 23. ALLERGIC‐RHINITIS‐PC.DE. 24. 22 OR 23