Search strategy for PubMed
| Sequence | Items |
| #1 | Opioid-Related Disorders (MeSH) |
| #2 | Opioid-Related Disorders |
| #3 | Addiction |
| #4 | Opioid dependence |
| #5 | Opioid withdrawal |
| #6 | Opioid abstinence |
| #7 | Opioid |
| #8 | Drug abuse |
| #9 | Substances abuse |
| #10 | Protracted withdrawal |
| #11 | Protracted abstinence |
| #12 | Heroin |
| #13 | Cocaine |
| #14 | #1 OR #2 OR #3 OR #4 OR #5 OR #6 OR #7 OR #8 OR #9 OR #10 OR #11 OR #12 OR #13 |
| #15 | Acupuncture (MeSH) |
| #16 | Acupuncture |
| #17 | Electroacupuncture |
| #18 | Auricular acupuncture |
| #19 | Acupoint |
| #20 | Needling |
| #21 | Meridian |
| #22 | #15 OR #16 OR #17 OR #18 OR #19 OR #20 OR #21 |
| #23 | Clinical trials (MeSH) |
| #24 | Randomized Clinical trials |
| #25 | Randomized |
| #26 | Random |
| #27 | Placebo |
| #28 | Trial |
| #29 | Groups |
| #30 | #23 OR #24 OR #25 OR #26 OR #27 OR #28 OR #29 |
| #31 | #14 AND #22 AND #30 |