{"id":"https://openalex.org/W2423924331","doi":null,"title":"[Drug prevention in duodenal ulcer. A placebo-controlled trial with ranitidine].","display_name":"[Drug prevention in duodenal ulcer. A placebo-controlled trial with ranitidine].","publication_year":1987,"publication_date":"1987-01-10","ids":{"openalex":"https://openalex.org/W2423924331","mag":"2423924331","pmid":"https://pubmed.ncbi.nlm.nih.gov/3547758"},"language":"no","primary_location":{"id":"pmid:3547758","doi":null,"is_oa":false,"landing_page_url":"https://pubmed.ncbi.nlm.nih.gov/3547758","pdf_url":null,"source":{"id":"https://openalex.org/S4306525036","display_name":"PubMed","issn_l":null,"issn":null,"is_oa":false,"is_in_doaj":false,"is_core":false,"listed_in":[],"host_organization":"https://openalex.org/I1299303238","host_organization_name":"National Institutes of Health","host_organization_lineage":["https://openalex.org/I1299303238"],"host_organization_lineage_names":[],"type":"repository"},"license":null,"license_id":null,"version":"publishedVersion","is_accepted":true,"is_published":true,"raw_source_name":"Tidsskrift for den Norske laegeforening : tidsskrift for praktisk medicin, ny raekke","raw_type":"Clinical Trial"},"volume":null,"type":"article","is_traditional":true,"indexed_in":["pubmed"],"open_access":{"is_oa":false,"oa_status":"closed","oa_url":null,"any_repository_has_fulltext":false},"authorships":[{"author_position":"first","author":{"id":"https://openalex.org/A5078678598","display_name":"N Hovdenak","orcid":null,"observed_orcids":[]},"institutions":[],"countries":[],"is_corresponding":false,"raw_author_name":"N Hovdenak","raw_affiliation_strings":[],"raw_orcid":null,"affiliations":[]},{"author_position":"middle","author":{"id":"https://openalex.org/A5091469193","display_name":"J\u00f8rgen Johansen","orcid":"https://orcid.org/0000-0003-3911-3929","observed_orcids":["https://orcid.org/0000-0003-3911-3929"]},"institutions":[],"countries":[],"is_corresponding":false,"raw_author_name":"J Johansen","raw_affiliation_strings":[],"raw_orcid":null,"affiliations":[]},{"author_position":"middle","author":{"id":"https://openalex.org/A5027093193","display_name":"Ove J. Lange","orcid":null,"observed_orcids":[]},"institutions":[],"countries":[],"is_corresponding":false,"raw_author_name":"O Lange","raw_affiliation_strings":[],"raw_orcid":null,"affiliations":[]},{"author_position":"middle","author":{"id":"https://openalex.org/A5070231553","display_name":"R Skj\u00f8lingstad","orcid":null,"observed_orcids":[]},"institutions":[],"countries":[],"is_corresponding":false,"raw_author_name":"R Skj\u00f8lingstad","raw_affiliation_strings":[],"raw_orcid":null,"affiliations":[]},{"author_position":"middle","author":{"id":"https://openalex.org/A5014162132","display_name":"Tor Qvigstad","orcid":null,"observed_orcids":[]},"institutions":[],"countries":[],"is_corresponding":false,"raw_author_name":"T Qvigstad","raw_affiliation_strings":[],"raw_orcid":null,"affiliations":[]},{"author_position":"last","author":{"id":null,"display_name":"S Odegaard","orcid":null,"observed_orcids":[]},"institutions":[],"countries":[],"is_corresponding":false,"raw_author_name":"S Odegaard","raw_affiliation_strings":[],"raw_orcid":null,"affiliations":[]}],"institutions":[],"countries_distinct_count":0,"institutions_distinct_count":0,"corresponding_author_ids":[],"corresponding_institution_ids":[],"apc_list":null,"apc_paid":null,"fwci":0.0,"has_fulltext":false,"cited_by_count":1,"citation_normalized_percentile":{"value":0.44005194,"is_in_top_1_percent":false,"is_in_top_10_percent":false},"cited_by_percentile_year":null,"biblio":{"volume":"107","issue":"1","first_page":"29","last_page":"30"},"is_retracted":false,"is_paratext":false,"is_xpac":false,"primary_topic":{"id":"https://openalex.org/T10276","display_name":"Helicobacter pylori-related gastroenterology studies","score":0.9589999914169312,"subfield":{"id":"https://openalex.org/subfields/2715","display_name":"Gastroenterology"},"field":{"id":"https://openalex.org/fields/27","display_name":"Medicine"},"domain":{"id":"https://openalex.org/domains/4","display_name":"Health Sciences"}},"topics":[{"id":"https://openalex.org/T10276","display_name":"Helicobacter pylori-related gastroenterology studies","score":0.9589999914169312,"subfield":{"id":"https://openalex.org/subfields/2715","display_name":"Gastroenterology"},"field":{"id":"https://openalex.org/fields/27","display_name":"Medicine"},"domain":{"id":"https://openalex.org/domains/4","display_name":"Health Sciences"}},{"id":"https://openalex.org/T10671","display_name":"Gastroesophageal reflux and treatments","score":0.012600000016391277,"subfield":{"id":"https://openalex.org/subfields/2715","display_name":"Gastroenterology"},"field":{"id":"https://openalex.org/fields/27","display_name":"Medicine"},"domain":{"id":"https://openalex.org/domains/4","display_name":"Health Sciences"}},{"id":"https://openalex.org/T11378","display_name":"Gastrointestinal Bleeding Diagnosis and Treatment","score":0.012000000104308128,"subfield":{"id":"https://openalex.org/subfields/2715","display_name":"Gastroenterology"},"field":{"id":"https://openalex.org/fields/27","display_name":"Medicine"},"domain":{"id":"https://openalex.org/domains/4","display_name":"Health Sciences"}}],"keywords":[{"id":"https://openalex.org/keywords/duodenal-ulcer","display_name":"duodenal ulcer","score":0.9480000138282776},{"id":"https://openalex.org/keywords/ranitidine","display_name":"ranitidine","score":0.968999981880188},{"id":"https://openalex.org/keywords/substance-abuse-prevention","display_name":"substance use prevention","score":0.8140000104904175},{"id":"https://openalex.org/keywords/ulcer-recurrence","display_name":"ulcer recurrence","score":0.46700000762939453},{"id":"https://openalex.org/keywords/h2-receptor-antagonists","display_name":"H2 receptor antagonists","score":0.8339999914169312}],"concepts":[{"id":"https://openalex.org/C2777445857","wikidata":"https://www.wikidata.org/wiki/Q423037","display_name":"Ranitidine","level":2,"score":0.9257699251174927},{"id":"https://openalex.org/C2993747882","wikidata":"https://www.wikidata.org/wiki/Q172941","display_name":"Duodenal ulcer","level":2,"score":0.7483662962913513},{"id":"https://openalex.org/C27081682","wikidata":"https://www.wikidata.org/wiki/Q269829","display_name":"Placebo","level":3,"score":0.7448012232780457},{"id":"https://openalex.org/C71924100","wikidata":"https://www.wikidata.org/wiki/Q11190","display_name":"Medicine","level":0,"score":0.5968584418296814},{"id":"https://openalex.org/C2780035454","wikidata":"https://www.wikidata.org/wiki/Q8386","display_name":"Drug","level":2,"score":0.4410473108291626},{"id":"https://openalex.org/C126322002","wikidata":"https://www.wikidata.org/wiki/Q11180","display_name":"Internal medicine","level":1,"score":0.41970810294151306},{"id":"https://openalex.org/C2994007011","wikidata":"https://www.wikidata.org/wiki/Q7632064","display_name":"Drug prevention","level":3,"score":0.4111815392971039},{"id":"https://openalex.org/C90924648","wikidata":"https://www.wikidata.org/wiki/Q120569","display_name":"Gastroenterology","level":1,"score":0.40668201446533203},{"id":"https://openalex.org/C98274493","wikidata":"https://www.wikidata.org/wiki/Q128406","display_name":"Pharmacology","level":1,"score":0.2616712749004364},{"id":"https://openalex.org/C204787440","wikidata":"https://www.wikidata.org/wiki/Q188504","display_name":"Alternative medicine","level":2,"score":0.09255236387252808},{"id":"https://openalex.org/C118552586","wikidata":"https://www.wikidata.org/wiki/Q7867","display_name":"Psychiatry","level":1,"score":0.04930788278579712},{"id":"https://openalex.org/C142724271","wikidata":"https://www.wikidata.org/wiki/Q7208","display_name":"Pathology","level":1,"score":0.0},{"id":"https://openalex.org/C40010229","wikidata":"https://www.wikidata.org/wiki/Q3184856","display_name":"Substance abuse","level":2,"score":0.0}],"mesh":[{"descriptor_ui":"D002986","descriptor_name":"Clinical Trials as Topic","qualifier_ui":null,"qualifier_name":null,"is_major_topic":false},{"descriptor_ui":"D004381","descriptor_name":"Duodenal Ulcer","qualifier_ui":"Q000517","qualifier_name":"prevention & control","is_major_topic":true},{"descriptor_ui":"D005500","descriptor_name":"Follow-Up Studies","qualifier_ui":null,"qualifier_name":null,"is_major_topic":false},{"descriptor_ui":"D006801","descriptor_name":"Humans","qualifier_ui":null,"qualifier_name":null,"is_major_topic":false},{"descriptor_ui":"D011897","descriptor_name":"Random Allocation","qualifier_ui":null,"qualifier_name":null,"is_major_topic":false},{"descriptor_ui":"D011899","descriptor_name":"Ranitidine","qualifier_ui":"Q000627","qualifier_name":"therapeutic use","is_major_topic":true}],"locations_count":2,"locations":[{"id":"pmid:3547758","doi":null,"is_oa":false,"landing_page_url":"https://pubmed.ncbi.nlm.nih.gov/3547758","pdf_url":null,"source":{"id":"https://openalex.org/S4306525036","display_name":"PubMed","issn_l":null,"issn":null,"is_oa":false,"is_in_doaj":false,"is_core":false,"listed_in":[],"host_organization":"https://openalex.org/I1299303238","host_organization_name":"National Institutes of Health","host_organization_lineage":["https://openalex.org/I1299303238"],"host_organization_lineage_names":[],"type":"repository"},"license":null,"license_id":null,"version":"publishedVersion","is_accepted":true,"is_published":true,"raw_source_name":"Tidsskrift for den Norske laegeforening : tidsskrift for praktisk medicin, ny raekke","raw_type":"Clinical Trial"},{"id":"mag:2423924331","doi":null,"is_oa":false,"landing_page_url":"https://pubmed.ncbi.nlm.nih.gov/3547758","pdf_url":null,"source":{"id":"https://openalex.org/S4306525036","display_name":"PubMed","issn_l":null,"issn":null,"is_oa":false,"is_in_doaj":false,"is_core":false,"listed_in":[],"host_organization":"https://openalex.org/I1299303238","host_organization_name":"National Institutes of Health","host_organization_lineage":["https://openalex.org/I1299303238"],"host_organization_lineage_names":[],"type":"repository"},"license":null,"license_id":null,"version":null,"is_accepted":false,"is_published":false,"raw_source_name":"PubMed","raw_type":null}],"best_oa_location":null,"sustainable_development_goals":[{"display_name":"Good health and well-being","id":"https://metadata.un.org/sdg/3","score":1.0}],"study_designs":[],"awards":[],"funders":[],"has_content":{"grobid_xml":false,"pdf":false},"content_urls":null,"referenced_works_count":0,"referenced_works":[],"related_works":["https://openalex.org/W2398557857","https://openalex.org/W2409287136","https://openalex.org/W2396925981","https://openalex.org/W2432797897","https://openalex.org/W2412852634","https://openalex.org/W181523107","https://openalex.org/W2414594269","https://openalex.org/W2115204568","https://openalex.org/W2412861125","https://openalex.org/W2414092752"],"abstract_inverted_index":null,"counts_by_year":[],"updated_date":"2026-10-31T12:09:11.096373","created_date":"2016-06-24T00:00:00"}