re mild and 8.7% were severe. AEs were vascular injuries (65.3%), vasovagal reactions (11.6%), and citrate toxicity (5.3%). AEs were associated with first-time donation, adj.OR (95%CI) = 1.5 (1.1-1.8) and lower BMI, adj. OR (95% CI) = 1.4 (1.1-1.8). Citrate toxicity was present in severe forms, unlike vascular injuries and vasovagal reactions that tended to be milder. Donors with hemoglobin levels above 16 g/dl, adj. OR (95% CI) = 1.3 (1.1-1.7) and platelet levels below 250,000, adj. OR (95% CI) = 1.3 (1.1-1.6) were more likely to contract AEs than others.Reporting adverse events is essential to establish a benchmark for the annual incidence rates to be compared against local and international figures. Blood donor centers should also take notice of blood donors characteristics that are associated with higher incidence and more severe forms of AEs during or after platelet donation. We have performed the direct and network meta-analysis to evaluate the safety and efficacy of robot-assisted (RARC) versus laparoscopic (LRC) versus open radical cystectomy (ORC) for bladder cancer (BCa). A systematic search of PubMed, Cochrane Library, and Embase was performed up until Dec 20, 2019. Outcome indexes include oncologic outcomes (the recurrence rate, mortality), pathologic outcomes (lymph node yield (LNY), positive lymph node (PLN), positive surgical margins (PSM)), perioperative outcomes (operating time (OP), estimated blood loss (EBL), blood transfusion rate, the length of hospital stay (LOS) and the time to regular diet) and postoperative 90-day complications. We have analyzed 6 RCTs, 23 prospective studies, and 25 retrospective studies (54 articles 6382 patients). On one hand, the direct meta-analysis shows RARC is better than LRC or ORC. On the other hand, the clinical effects of the recurrence rate, Morbidity, PSM, LNY, PLN, and postoperative 90-day complications of RARC, LRC and ORCurther. The direct meta-analysis and network meta-analysis suggest that RARC is better than LRC or ORC according to comprehensive analysis. However, we need a large sample size and more high-quality studies to verify and improve in the further. Pressure injuries (PIs) bring a considerable physical and mental burden on immobile patients, and have put families and government under tremendous pressure to cover the cost of treatment. Therefore, this protocol proposes to identify risk factors of developing PIs in immobile patients from systematic reviews (SRs) and clinical practice guidelines (CPGs), in order to establish a risk prediction model for developing PIs and identify individual risk factors that can be modified to aid prevention. Electronic databases and specific databases for CPGs and SRs will be searched. Study selection and data collection will be performed independently by two reviewers. All included SRs and CPGs will be subject to critical appraisal. RevMan 5.3 will be used to calculate the pooled odds ratio (ORP) after appraising the quality of eligible studies, and the risk predictive model will be established using logistic regression model. A narrative synthesis, evidence summary table, and Sankey diagram will also be performed. The results of this study will be submitted to a peer-reviewed journal for publication. This systematic review will provide a risk prediction model of PI developing. INPLASY2020100097. INPLASY2020100097. The optimal interventions for unprotected left main coronary artery (ULMCA) disease have long been debated, and long-term clinical studies comparing single stenting to double stenting strategies for ULMCA are currently lacking. We plan to perform a systematic review and meta-analysis of clinical trials comparing single stenting with double stents strategy for ULMCA disease. We will search PubMed, EMBASE, Web of science and Cochrane Library using a comprehensive strategy. The related conference proceedings and reference lists of the included studies will also be checked to identify additional studies. Two reviewers will screen retrieved records, extract information and assess the risk of bias independently. STATA software will be used to conduct data synthesis. There is no requirement of ethical approval and informed consent. This study will be submitted to a peer-reviewed journal for publication. We hope it will provide a relatively comprehensive reference for clinical practice and future relevant clinical trials. Ethics approval and patient consent are not required, as this study is a systematic review and meta-analysis. INPLASY2020110030. INPLASY2020110030. Human Immunodeficiency Virus/Acquired Immune Deficiency Syndrome (HIV/AIDS) has become a pandemic that has infected millions of people around the world and brings a tremendous economic burden. There are numerous guidelines for prevention, diagnosis, and treatment of HIV/AIDS published in recent years, but the quality of these guidelines is still unknown. Therefore, we conducted this study to evaluate the quality of prevention, diagnosis, and treatment of HIV/AIDS published by World Health Organization (WHO) as well as perform a comparison of recommendations between those guidelines. And we also hope our finding could provide suggestions to enhance the quality of future guidelines in this area. We obtained guidelines from WHO Guidelines approved by the Guidelines Review Committee (GRC). https://www.selleckchem.com/products/amenamevir.html Two reviewers will independently select eligible guidelines. The quality of included guidelines will be appraised by at least four reviewers through AGREE II and RIGHT tools. The results will be checked for discrepancies. Differences between them than two reviewers will be considered as discrepant and the final discrepancies will be resolved by consensus. The results will be presented in tables and the descriptive statistics will be calculated for all domains of the AGREE II instrument as standard score and median (range) as the reporting quality result of eligible guidelines will also be evaluated through RIGHT criteria. In this study, we will also compare the differences and similarities of recommendations among different guidelines. The results of this study will increase the knowledge about the development of recommendations guidelines for HIV/AIDS of high methodological rigor and reporting quality. This study may also identify potential limitations for future research in this area. This study may guide health professionals, policy makers, and health policy managers in choosing the guidelines for recommendation to better to achieve the 90-90-90 targets. INPLASY2020110010. INPLASY2020110010.