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1 | exp Plant Extracts/or exp Drugs, Chinese Herbal/or exp Plants, Medicinal/or exp Medicine, Chinese Traditional/or exp China/or chinese medicine.mp. or exp Medicine, Oriental Traditional/or exp Phytotherapy/ |
2 | drugs non prescription.mp. or exp Drugs, Non-Prescription/ |
3 | medicinal herbs.mp |
4 | herbs medicinal.mp. |
5 | drugs non prescription.mp. or exp Drugs, Non-Prescription/ |
6 | alternative medicine.mp. or exp Complementary Therapies/ |
7 | complementary medicine.mp. |
8 | Phytotherapy/or Plants, Medicinal/or Plant Extracts/or Herb-Drug Interactions/or herbs.mp. or Drugs, Chinese Herbal/or Plant Preparations/ |
9 | exp Phytotherapy/or exp Plants, Medicinal/or exp Plant Extracts/or exp Herb-Drug Interactions/or exp Alkaloids/or herbs.mp. or exp Drugs, Chinese Herbal/or exp Plant Preparations/ |
10 | 1 or 2 or 3 or 4 or 5 or 6 or 7 or 8 or 9 |
11 | randomized controlled trials.mp. or exp Randomized Controlled Trials/ |
12 | exp Random Allocation/or exp Clinical Trials/or exp Double-Blind Method/or double blind.mp. or exp Placebos/ |
13 | single blind.mp. or exp Single-Blind Method/ |
14 | clinical trials.mp. |
15 | prospective studies.mp. or exp Prospective Studies/ |
16 | follow up studies.mp. or exp Follow-Up Studies/ |
17 | 11 or 12 or 13 or 14 or 15 or 16 |
18 | exp Mental Retardation/or exp Dementia/or exp vascular dementia/or progressive brain disorder.mp. or exp Memory Disorders/ |
19 | (vascular dementia).mp. |
20 | 18 or 19 |
21 | 10 and 17 and 20 |
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