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Temporal trends in severe maternal and neonatal trauma during childbirth: a population-based observational study
Qi Wen, Giulia M Muraca, Joseph Ting, Sarah Coad, Kenneth I Lim, Sarka Lisonkova

BMJ Open Mar 2018, 8 (3) e020578; DOI: 10.1136/bmjopen-2017-020578
Twenty-year time trends in hypertension prevalence in Yi people of China: three successive cross-sectional studies, 1996–2015
Jia Zhang, Shaoping Wan, Biao Zhang, Fen Dong, Li Pan, Wuli Yihuo, Haiying Gong, Fang Yang, Guodong Xu, Zheng Li, Guoju Li, Yanlong Li, Xiaoyang Wang, Guangliang Shan

BMJ Open Oct 2018, 8 (10) e022714; DOI: 10.1136/bmjopen-2018-022714
Trends in socioeconomic inequalities in five major risk factors for cardiovascular disease in the Korean population: a cross-sectional study using data from the Korea National Health and Nutrition Examination Survey, 2001–2014
Yoon Jung Kim, Ji Sung Lee, Juri Park, Dong Seop Choi, Doo Man Kim, Kee-Hyoung Lee, Ho Yeon Kim, Sin Gon Kim, Juneyoung Lee

BMJ Open May 2017, 7 (5) e014070; DOI: 10.1136/bmjopen-2016-014070
Trends in cerebrovascular diseases mortality in Serbia, 1997–2016: a nationwide descriptive study
Irena Ilic, Milena Ilic, Sandra Sipetic Grujicic

BMJ Open Feb 2019, 9 (2) e024417; DOI: 10.1136/bmjopen-2018-024417
Immunological failure in HIV-infected adults from 2003 to 2015 in Southwest Ethiopia: a retrospective cohort study
Hailay Abrha Gesesew, Paul Ward, Kifle Woldemichael, Lillian Mwanri

BMJ Open Aug 2018, 8 (8) e017413; DOI: 10.1136/bmjopen-2017-017413
Temporal trends in neonatal mortality and morbidity following spontaneous and clinician-initiated preterm birth in Washington State, USA: a population-based study
Lindsay L Richter, Joseph Ting, Giulia M Muraca, Anne Synnes, Kenneth I Lim, Sarka Lisonkova

BMJ Open Jan 2019, 9 (1) e023004; DOI: 10.1136/bmjopen-2018-023004
Is secondary preventive care improving? Observational study of 10-year trends in emergency admissions for conditions amenable to ambulatory care
Martin Bardsley, Ian Blunt, Sian Davies, Jennifer Dixon

BMJ Open Jan 2013, 3 (1) e002007; DOI: 10.1136/bmjopen-2012-002007
Heavy smoking rate trends and related factors in Korean occupational groups: analysis of KNHANES 2007–2012 data
Bo-Guen Kim, Do-Dam Pang, Young-Jun Park, Jong-In Lee, Hyoung-Ryoul Kim, Jun-Pyo Myong, Tae-Won Jang

BMJ Open Nov 2015, 5 (11) e008229; DOI: 10.1136/bmjopen-2015-008229
Trends in disability of instrumental activities of daily living among older Chinese adults, 1997-2006: population based study
Yajun Liang, Anna-Karin Welmer, Jette Möller, Chengxuan Qiu

BMJ Open Aug 2017, 7 (8) e016996; DOI: 10.1136/bmjopen-2017-016996

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