Immunomodulatory therapy in children with paediatric inflammatory multisystem syndrome temporally associated with SARS-CoV-2 (PIMS-TS, MIS-C; RECOVERY): a randomised, controlled, o... by RECOVERY Collaborative Group

Azithromycin in patients admitted to hospital with COVID-19 (RECOVERY): a randomised, controlled, open-label, platform trial by RECOVERY Collaborative Group

Lopinavir–ritonavir in patients admitted to hospital with COVID-19 (RECOVERY): a randomised, controlled, open-label, platform trial by RECOVERY Collaborative Group

Design, recruitment, and baseline characteristics of the LENS trial by The LENS Collaborative Group

Systematic review of purine analog treatment for chronic lymphocytic leukemia: lessons for future trials. by CLL Trialists’ Collaborative Group

Caesarean section surgical techniques: a randomised factorial trial (CAESAR). by CAESAR study collaborative group

Randomized trial of the effects of cholesterol-lowering with simvastatin on peripheral vascular and other major vascular outcomes in 20,536 people with peripheral arterial disease... by Heart Protection Study Collaborative Group

Allogeneic peripheral blood stem-cell compared with bone marrow transplantation in the management of hematologic malignancies: an individual patient data meta-analysis of nine rand... by Stem Cell Trialists' Collaborative Group

Lipoprotein-associated phospholipase A₂ activity and mass in relation to vascular disease and nonvascular mortality. by Heart Protection Study Collaborative Group

Randomized Evaluation of the Effects of Anacetrapib through Lipid-modification (REVEAL)—A large-scale, randomized, placebo-controlled trial of the clinical effects of anacetrapib a... by Landray, M, REVEAL Collaborative Group

The Million Women Study: design and characteristics of the study population. The Million Women Study Collaborative Group. by Million Women Study Collaborative Group

MRC/BHF Heart Protection Study of cholesterol lowering with simvastatin in 20,536 high-risk individuals: a randomised placebo-controlled trial. by Heart Protection Study Collaborative Group

Details of a prospective protocol for a collaborative meta-analysis of individual participant data from all randomized trials of intravenous rt-PA vs. control: statistical analysis... by Stroke Thrombolysis Trialists' Collaborative Group

Guideline-Based Chinese Herbal Medicine Treatment Plus Standard Care for Severe Coronavirus Disease 2019 (G-CHAMPS): Evidence From China by Yong-an Ye, The G-CHAMPS Collaborative Group

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Ovarian cancer and body size: individual participant meta-analysis including 25,157 women with ovarian cancer from 47 epidemiological studies. by Collaborative Group on Epidemiological Studies of Ovarian Cancer

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Endometrial cancer and oral contraceptives: an individual participant meta-analysis of 27 276 women with endometrial cancer from 36 epidemiological studies by Collaborative Group On Epidemiological Studies On Endometrial Cancer

Ovarian ablation in early breast cancer: overview of the randomised trials by Early Breast Cancer Trialists' Collaborative Group

Long-term outcomes for neoadjuvant versus adjuvant chemotherapy in early breast cancer: meta-analysis of individual patient data from ten randomised trials by Early Breast Cancer Trialists’ Collaborative Group

Effects of adjuvant tamoxifen and of cytotoxic therapy on mortality in early breast cancer by Early Breast Cancer Trialists' Collaborative Group

Tamoxifen for early breast cancer: an overview of the randomised trials by Early Breast Cancer Trialists' Collaborative Group