The Nature Partner Journals series, abbreviated npj, is a series of
online-only,
open access, journals. It was launched in April 2014 with three journals: npj Primary Care Respiratory Medicine, npj
Biofilms and Microbiomes, and npj Schizophrenia. Each journal in the series is published through a partnership between
Springer Nature and a separate academic organization, foundation, or institution.[1][2]