{"id":"https://openalex.org/W2253221925","doi":null,"title":"Sero-prevalence of Helicobacter pylori Cag A in Chinese patients with bronchiectasis","display_name":"Sero-prevalence of Helicobacter pylori Cag A in Chinese patients with bronchiectasis","publication_year":1999,"publication_date":"1999-01-01","ids":{"openalex":"https://openalex.org/W2253221925","mag":"2253221925"},"language":"en","primary_location":{"id":"mag:2253221925","doi":null,"is_oa":false,"landing_page_url":"http://hub.hku.hk/handle/10722/78117","pdf_url":null,"source":null,"license":null,"license_id":null,"version":null,"is_accepted":false,"is_published":false,"raw_source_name":null,"raw_type":null},"volume":null,"type":"article","indexed_in":[],"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/A5006747770","display_name":"Kwt Tsang","orcid":"https://orcid.org/0009-0001-0652-592X","observed_orcids":["https://orcid.org/0009-0001-0652-592X"]},"institutions":[],"countries":[],"is_corresponding":false,"raw_author_name":"Kwt Tsang","raw_affiliation_strings":[],"raw_orcid":null,"affiliations":[]},{"author_position":"middle","author":{"id":"https://openalex.org/A5086261379","display_name":"Wing Kit Lam","orcid":"https://orcid.org/0000-0001-6454-5729","observed_orcids":["https://orcid.org/0000-0001-6454-5729"]},"institutions":[],"countries":[],"is_corresponding":false,"raw_author_name":"WK Lam","raw_affiliation_strings":[],"raw_orcid":"https://orcid.org/0000-0001-6454-5729","affiliations":[]},{"author_position":"middle","author":{"id":"https://openalex.org/A5108206105","display_name":"E Kwok","orcid":null,"observed_orcids":[]},"institutions":[],"countries":[],"is_corresponding":false,"raw_author_name":"E Kwok","raw_affiliation_strings":[],"raw_orcid":null,"affiliations":[]},{"author_position":"middle","author":{"id":"https://openalex.org/A5090805467","display_name":"YH Leung","orcid":null,"observed_orcids":[]},"institutions":[],"countries":[],"is_corresponding":false,"raw_author_name":"YH Leung","raw_affiliation_strings":[],"raw_orcid":null,"affiliations":[]},{"author_position":"middle","author":{"id":"https://openalex.org/A5048315754","display_name":"HC Hu","orcid":null,"observed_orcids":[]},"institutions":[],"countries":[],"is_corresponding":false,"raw_author_name":"HC Hu","raw_affiliation_strings":[],"raw_orcid":null,"affiliations":[]},{"author_position":"middle","author":{"id":"https://openalex.org/A5113588441","display_name":"Bcy Wong","orcid":null,"observed_orcids":[]},"institutions":[],"countries":[],"is_corresponding":false,"raw_author_name":"Bcy Wong","raw_affiliation_strings":[],"raw_orcid":null,"affiliations":[]},{"author_position":"last","author":{"id":"https://openalex.org/A5112138349","display_name":"SK Lam","orcid":null,"observed_orcids":[]},"institutions":[],"countries":[],"is_corresponding":false,"raw_author_name":"SK Lam","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":0,"citation_normalized_percentile":{"value":0.26338298,"is_in_top_1_percent":false,"is_in_top_10_percent":false},"cited_by_percentile_year":null,"biblio":{"volume":null,"issue":null,"first_page":null,"last_page":null},"is_retracted":false,"is_paratext":false,"is_xpac":false,"primary_topic":{"id":"https://openalex.org/T10276","display_name":"Helicobacter pylori-related gastroenterology studies","score":0.9907000064849854,"subfield":{"id":"https://openalex.org/subfields/2746","display_name":"Surgery"},"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":0.9907000064849854,"subfield":{"id":"https://openalex.org/subfields/2746","display_name":"Surgery"},"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/T10665","display_name":"Cystic Fibrosis Research Advances","score":0.006800000090152025,"subfield":{"id":"https://openalex.org/subfields/2740","display_name":"Pulmonary and Respiratory Medicine"},"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/T11316","display_name":"Mycobacterium research and diagnosis","score":0.0003000000142492354,"subfield":{"id":"https://openalex.org/subfields/2713","display_name":"Epidemiology"},"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/helicobacter-pylori","display_name":"Helicobacter pylori","score":0.9990000128746033},{"id":"https://openalex.org/keywords/caga-gene","display_name":"cagA gene","score":0.7940000295639038},{"id":"https://openalex.org/keywords/seroprevalence","display_name":"seroprevalence","score":0.9679999947547913},{"id":"https://openalex.org/keywords/bronchiectasis","display_name":"bronchiectasis","score":0.9750000238418579},{"id":"https://openalex.org/keywords/chinese-patients","display_name":"Chinese patients","score":0.6610000133514404}],"concepts":[{"id":"https://openalex.org/C2779379686","wikidata":"https://www.wikidata.org/wiki/Q32778","display_name":"Bronchiectasis","level":3,"score":0.7915583848953247},{"id":"https://openalex.org/C2776409635","wikidata":"https://www.wikidata.org/wiki/Q180556","display_name":"Helicobacter pylori","level":2,"score":0.7321329116821289},{"id":"https://openalex.org/C71924100","wikidata":"https://www.wikidata.org/wiki/Q11190","display_name":"Medicine","level":0,"score":0.5621067881584167},{"id":"https://openalex.org/C99454951","wikidata":"https://www.wikidata.org/wiki/Q932068","display_name":"Environmental health","level":1,"score":0.3674500584602356},{"id":"https://openalex.org/C126322002","wikidata":"https://www.wikidata.org/wiki/Q11180","display_name":"Internal medicine","level":1,"score":0.2748227119445801},{"id":"https://openalex.org/C2777714996","wikidata":"https://www.wikidata.org/wiki/Q7886","display_name":"Lung","level":2,"score":0.09116056561470032}],"mesh":[],"locations_count":1,"locations":[{"id":"mag:2253221925","doi":null,"is_oa":false,"landing_page_url":"http://hub.hku.hk/handle/10722/78117","pdf_url":null,"source":null,"license":null,"license_id":null,"version":null,"is_accepted":false,"is_published":false,"raw_source_name":null,"raw_type":null}],"best_oa_location":null,"sustainable_development_goals":[{"score":1.0,"display_name":"Good health and well-being","id":"https://metadata.un.org/sdg/3"}],"sustainable_development_goals_aurora":[{"score":0.5299999713897705,"display_name":"Zero hunger","id":"https://metadata.un.org/sdg/2"}],"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/W2282127102","https://openalex.org/W2275908778","https://openalex.org/W7098275720","https://openalex.org/W2007234345","https://openalex.org/W2272667782","https://openalex.org/W2282418678","https://openalex.org/W2232492828","https://openalex.org/W7056960137","https://openalex.org/W2100228685","https://openalex.org/W6991503982"],"abstract_inverted_index":null,"counts_by_year":[],"updated_date":"2026-09-26T08:19:03.415552","created_date":"2016-06-24T00:00:00"}