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- [4] Recruitment strategies in randomised controlled trials of men aged 50 years and older: a systematic review [J]. BMJ OPEN, 2019, 9 (04):
- [7] Methods to improve recruitment to randomised controlled trials: Cochrane systematic review and meta-analysis [J]. BMJ OPEN, 2013, 3 (02):
- [8] The Efficacy of Antibiotic Prophylaxis at Placement of Dental Implants A Cochrane Systematic Review of Randomised Controlled Clinical Trials [J]. IMPLANTOLOGIE, 2010, 18 (01): : 47 - 57