diff options
| -rw-r--r-- | python/fatcat_tools/importers/pubmed.py | 2 |
1 files changed, 1 insertions, 1 deletions
diff --git a/python/fatcat_tools/importers/pubmed.py b/python/fatcat_tools/importers/pubmed.py index aeac43b5..64f5a024 100644 --- a/python/fatcat_tools/importers/pubmed.py +++ b/python/fatcat_tools/importers/pubmed.py @@ -376,7 +376,7 @@ class PubmedImporter(EntityImporter): identifiers = pubmed.ArticleIdList pmid = medline.PMID.string.strip() doi = identifiers.find("ArticleId", IdType="doi") - if doi: + if doi and doi.string: doi = doi.string.lower().strip() if doi.startswith('doi:'): doi = doi[4:] |