Content Provider
Hirsla - Landspítali University Hospital research archive
63
PubMed Central (PMC)
16
Uppsala University: Publications (DiVA)
13
Umeå University: Publications (DiVA)
12
Aarhus University: Research
10
Opin vísindi (Iceland)
9
University of Bergen: Bergen Open Research Archive (BORA-UiB)
7
The BMJ
6
Springer Nature (via Crossref)
4
Universidade Federal de São Paulo (UNIFESP): Repositório Institucional
4
HighWire Press (Stanford University)
3
ScienceDirect (Elsevier - via Crossref)
3
Wiley Online Library
3
Apollo - University of Cambridge Repository
2
Lund University Publications (LUP)
2
University of Copenhagen: Research
2
Archive ouverte HAL (Hyper Article en Ligne, CCSD - Centre pour la Communication Scientifique Directe)
1
DataCite Metadata Store (German National Library of Science and Technology)
1
Informa
1
Inserm: HAL (Institut national de la santé et de la recherche médicale)
1
King's College, London: Research Portal
1
NOVA: The University of Newcastle Research Online (Australia)
1
Open Access LMU (Ludwig-Maximilians-University Munich)
1
Oxford University Press
1
ScienceDirect (Elsevier)
1
The BMJ (via Crossref)
1
UPF Digital Repository (Universitat Pompeu Fabra, Barcelona)
1
University of Southern Denmark Research Portal
1
Université de Nantes: HAL-UNIV-NANTES
1