38230457 clusters
Max cluster size: 20

Cluster Size Distribution
1	8209458
2	20930165
3	9087768
4	1959
5	658
6	288
7	94
8	35
9	16
10	8
11	5
12	2
20	1

Cluster Type Distribution
frozenset({('PMC', 8), ('PMID', 1), ('DOI', 1)})	1
frozenset({('PMC', 3), ('PMID', 1), ('DOI', 6)})	1
frozenset({('PMC', 2), ('PMID', 1)})	1
frozenset({('PMC', 2), ('DOI', 5), ('PMID', 1)})	1
frozenset({('DOI', 10), ('PMC', 9), ('PMID', 1)})	1
frozenset({('PMID', 1), ('PMC', 5), ('DOI', 6)})	1
frozenset({('PMC', 3), ('PMID', 1), ('DOI', 2)})	1
frozenset({('PMID', 1), ('DOI', 1), ('PMC', 6)})	1
frozenset({('PMC', 10), ('PMID', 1), ('DOI', 1)})	1
frozenset({('PMC', 4), ('PMID', 1), ('DOI', 6)})	2
frozenset({('DOI', 4), ('PMID', 1), ('PMC', 1)})	2
frozenset({('PMC', 4), ('PMID', 1), ('DOI', 1)})	3
frozenset({('DOI', 5), ('PMID', 1), ('PMC', 5)})	3
frozenset({('PMC', 3), ('PMID', 1), ('DOI', 1)})	6
frozenset({('PMC', 4), ('PMID', 1), ('DOI', 5)})	6
frozenset({('PMC', 3), ('DOI', 5), ('PMID', 1)})	7
frozenset({('DOI', 4), ('PMC', 4), ('PMID', 1)})	9
frozenset({('PMC', 2), ('DOI', 4), ('PMID', 1)})	14
frozenset({('PMID', 1), ('DOI', 2)})	16
frozenset({('PMC', 3), ('PMID', 1), ('DOI', 4)})	33
frozenset({('PMC', 2), ('PMID', 1), ('DOI', 1)})	65
frozenset({('PMC', 3), ('PMID', 1), ('DOI', 3)})	80
frozenset({('PMID', 1), ('PMC', 1), ('DOI', 3)})	104
frozenset({('PMC', 2), ('PMID', 1), ('DOI', 3)})	282
frozenset({('PMC', 2), ('PMID', 1), ('DOI', 2)})	548
frozenset({('PMID', 1), ('DOI', 2), ('PMC', 1)})	1894
frozenset({('PMID', 1), ('PMC', 1)})	710736
frozenset({('PMID', 1)})	8209458
frozenset({('PMID', 1), ('DOI', 1), ('PMC', 1)})	9087751
frozenset({('PMID', 1), ('DOI', 1)})	20219429