Table 1.

Overview of the inclusion and criteria

Inclusion criteria	Exclusion criteria
Peer-reviewed publications on pooled procurement of medicines or vaccines	Non-peer-reviewed publications or publications of pooled procurement around other type of products or taking place in other sectors
Publications that focus on primary data collection, or on the analysis of existing datasets	Editorials, perspectives, literature studies, commentaries and opinions
Publications that focus on existing or failed pooled procurement mechanisms	Pooled procurement simulations or modelling studies
Publications that focus on pooled procurement mechanisms operating on a sub-national level or higher	Micro-level pooling of < 10 health facilities or hospitals. Our focus is mainly in understanding the functioning of pooled procurement mechanisms that aim to increase access, affordability and quality benefitting a larger population than the particular micro-level pool of health facilities and the target population it serves
Publications that are published in English	Publications in other languages
Full text availability of the publication	Full text unavailability of the publication