Primary study · included by 2 reviews

Zeng 2019

ProbableThe reviews cited this study without a PMID, DOI or NCT, so it is matched by first author and year. Two different studies by the same author in the same year could be merged here.

Included by

The Efficacy and Safety of Nutritional Supplements for Cancer Supportive Care: An Umbrella Review and Hierarchical Evidence Synthesis.

Non-Cochrane · umbrella · 2026 · cited as Zeng 2019 · Reference 89; Tables 2-8

The review does not say which of its outcomes this study informs.

Smoking and oral and pharyngeal cancer: a meta-analysis.

Non-Cochrane · aetiology · 2025 · cited as Zeng 2019 · Supplementary Table S3

The review does not say which of its outcomes this study informs.

2 including reviews in total.