Since 2015 BioMed Central no longer requires a subscription to access additional content (reviews and other permium contenct (commentaries, correspondence, meeting reports, ...) of the following journals:
- Alzheimer's Research & Therapy
- Arthritis Research & Therapy
- Breast Cancer Research
- Critical Care
- Genome Medicine
- Genome Biology
- Stem Cell Research & Therapy
So all articles of these journals published before 2015 should be hybrid.
I noticed several examples in the data set those who are not marked as a hybrid article.
Is there a special reason?
Since 2015 BioMed Central no longer requires a subscription to access additional content (reviews and other permium contenct (commentaries, correspondence, meeting reports, ...) of the following journals:
So all articles of these journals published before 2015 should be hybrid.
I noticed several examples in the data set those who are not marked as a hybrid article.
Is there a special reason?