Håkon A. Bolkan

Norwegian University of Science and Technology

19H指数

91论文数

1.3K被引数

收录论文 28

发表时间

Caesarean section rates and obstetric practices in Sierra Leone before, during, and after the Ebola epidemic: Results from a nationwide household study 塞拉利昂剖宫产率与产科实践在埃博拉疫情前后：一项全国性家庭调查的结果

Womens Health

IF2.9

2026-09-21

PREAI

Josien Westendorp; Hanna M. Mathéron; Alex J. van Duinen; Momoh L. Mansaray; Lora Daskalska; Osman Sankoh; Risa Hoffmann-Lonnée; Reinou S. Groen; Martin P. Grobusch; Håkon A. Bolkan

A cross-sectional study of caesarean deliveries performed by medical doctors and associate clinicians in nine district and regional hospitals in Sierra Leone using the Robson Ten Group Classification System 使用罗森十组分类系统对塞拉利昂九所区和地区医院由医生和助理临床医生执行的剖宫产进行横断面研究

INTERNATIONAL JOURNAL OF GYNECOLOGY & OBSTETRICS

IF2.4

2026-05-30

OAAI

Josien Westendorp; Rugiatu Jalloh; Sarrah Sheriff; Jenny Wussow; Guro Stamland; Sigrid-Anne Bjorøy; Francis Moses; Marcus J. Rijken; Risa Hoffmann-Lonnee; Håkon A. Bolkan; Alex J. van Duinen

Transforming healthcare: evaluating a decade of postgraduate training at the Liberia College of Physicians and Surgeons 重塑医疗保健：评估利比里亚医师与外科医生学院十年来的研究生培训

Human Resources for Health

IF4.3

2026-05-11

OAAI

Juul Marlies Bakker; Douglas Weru Nyaguthii; Benetta Collins Andrews; Philderald Pratt; John Mulbah; Alex J. van Duinen; Hakon Angell Bolkan

Challenges and enablers in accessing paediatric inguinal hernia surgical care in Sierra Leone: a qualitative exploratory study 塞拉利昂获取儿童腹股沟疝外科护理的挑战与促进因素：一项定性探索性研究

BMJ Open

IF2.3

2026-05-07

PREAI

Mona, Johanna; Ahlback, Johan G.; Lebbie, Aiah; Ashley, Thomas; Bolkan, Hakon A.; van Duinen, Alex J.

Development of paediatric surgical care in Sierra Leone: a repeated nationwide cross-sectional study from 2012 to 2023 塞拉利昂儿科外科护理的发展：2012年至2023年重复全国横断面研究

BMJ Public Health

IF0

2026-01-30

OAAI

Faradonbeh, Sara Aakre; Hoeg Halvorsen, Anniken; Ashley, Thomas; Lebbie, Aiah; Kabba, Mustapha S.; Andersen, Lena; Angell Bolkan, Hakon; Van Duinen, Alex J.

Outcomes after elective inguinal hernia repair with mesh performed by associate clinicians versus medical doctors in Sierra Leone: 5-year follow-up of a randomized clinical trial 在塞拉利昂，由副医师与医师使用网片进行择期腹股沟疝修复术后的结果比较：一项随机临床试验的5年随访研究

BJS-BRITISH JOURNAL OF SURGERY

IF0

2025-12-01

PREAI

Ashley, Thomas; Ashley, Hannah F.; Wladis, Andreas; Nordin, Par; Ohene-Yeboah, Michael; Smalle, Isaac O.; Beard, Jessica H.; Lofgren, Jenny; Bolkan, Hakon A.; Van Duinen, Alex J.

Suspected Buruli ulcer cases in Tonkolili District, Sierra Leone- a prospective cohort study 塞拉利昂通科利利区疑似类炭疽溃疡病例——一项前瞻性队列研究

INFECTION

IF3.6

2025-05-21

OAAI

Vas Nunes, Jonathan; Wassill, Lars; Monnink, Giulia; Falama, Abdul-Mac; Matheron, Hanna; Conteh, Amara; Sesay, Maxwell; Sesay, Aminata; Bolkan, Hakon; Grobusch, Martin P.; Schaumburg, Frieder

Evaluating Access Improving Interventions: An Economic Evaluation of Surgical Task-Shifting for C-Sections in Sierra Leone 评估改善准入的干预措施：塞拉利昂剖宫产手术任务委派的经济学评价

APPLIED HEALTH ECONOMICS AND HEALTH POLICY

IF3.3

2025-04-30

PREAI

Bryony Dawkins; Bethany Shinkins; Tim Ensor; David Jayne; Thomas Ashley; Alex J. van Duinen; Håkon A. Bolkan; David Meads

Long-term maternal outcomes 5 years after cesarean section in Sierra Leone: A prospective cohort study 塞拉利昂剖宫产5年后的长期母体结局：一项前瞻性队列研究

INTERNATIONAL JOURNAL OF GYNECOLOGY & OBSTETRICS

IF2.4

2024-11-02

OAAI

Logstein, Erika; Torp, Richard; Ashley, Thomas; Kamara, Michael M.; Koroma, Alimamy P.; Dumbuya, Abu Bakarr; Suma, Musa S.; Moijue, Abdul Rahman; Westendorp, Josien; Kujabi, Monica L.; Rijken, Marcus J.; Wibe, Arne; Hagander, Lars; Leather, Andrew J. M.; Bolkan, Hakon A.; van Duinen, Alex J.

Prevalence, incidence, repair rate, and morbidity of groin hernias in Sierra Leone: cross-sectional household study

BJS OPEN

IF4.5

2023-01-19

OAAI

Lindenbergh, Karel C.; van Duinen, Alex J.; Ahlback, Johan G.; Kamoh, Joseph; Bah, Silleh; Ashley, Thomas; Lofgren, Jenny; Grobusch, Martin P.; Sankoh, Osman; Bolkan, Hakon A.

Mapping population access to essential surgical care in Liberia using equipment, personnel, and bellwether capability standards

BRITISH JOURNAL OF SURGERY

IF8.7

2022-12-05

OAAI

Adde, Havard A.; van Duinen, Alex J.; Andrews, Benetta C.; Bakker, Juul; Goyah, Kezelebah S.; Salvesen, Oyvind; Sheriff, Swaliho; Utam, Terseer; Yaskey, Clarence; Weiser, Thomas G.; Bolkan, Hakon A.

Chronic wounds in Sierra Leone: Searching for Buruli ulcer, a NTD caused by Mycobacterium ulcerans, at Masanga Hospital

PLOS NEGLECTED TROPICAL DISEASES

IF3.4

2021-10-13

OAAI

Please, Helen R.; Vas Nunes, Jonathan H.; Patel, Rashida; Pluschke, Gerd; Tholley, Mohamed; Ruf, Marie-Therese; Bolton, William; Scott, Julian A.; Grobusch, Martin P.; Bolkan, Hakon A.; Brown, Julia M.; Jayne, David G.

The impact of the COVID-19 pandemic on hospital utilisation in Sierra Leone

BMJ GLOBAL HEALTH

IF6.1

2021-10-11

OAAI

Sevalie, Stephen; Youkee, Daniel; van Duinen, A. J.; Bailey, Emma; Bangura, Thaimu; Mangipudi, Sowmya; Mansaray, Esther; Odland, Maria Lisa; Parmar, Divya; Samura, Sorie; van Delft, Diede; Wurie, Haja; Davies, Justine, I; Bolkan, H. A.; Leather, Andrew J. M.

Changes in surgical volume, workforce, and productivity in Sierra Leone between 2012 and 2017

SURGERY

IF2.7

2021-07-01

PREAI

Lindheim-Minde, Barbro; Gjora, Andreas; Bakker, Juul M.; Duinen, Alex J. van; Leerdam, Daniel van; Smalle, Isaac O.; Bundu, Ibrahim; Bolkan, Hakon A.

Travel time and perinatal mortality after emergency caesarean sections: an evaluation of the 2-hour proximity indicator in Sierra Leone

BMJ GLOBAL HEALTH

IF6.1

2020-12-21

OAAI

van Duinen, Alex J.; Adde, Havard A.; Fredin, Ola; Holmer, Hampus; Hagander, Lars; Koroma, Alimamy P.; Koroma, Michael M.; Leather, Andrew J. M.; Wibe, Arne; Bolkan, Hakon A.

Impact of surgical infrastructure and personnel on volume and availability of essential surgical procedures in Liberia

BJS OPEN

IF4.5

2020-09-18

OAAI

Adde, H. A.; van Duinen, A. J.; Oghogho, M. D.; Dunbar, N. K.; Tehmeh, L. G.; Hampaye, T. C.; Salvesen, O.; Weiser, T. G.; Bolkan, H. A.

Primum non nocere: Potential indirect adverse effects of COVID-19 containment strategies in the African region

TRAVEL MEDICINE AND INFECTIOUS DISEASE

IF4.7

2020-05-01

OAAI

Wehrens, Erik; Bangura, James S.; Falama, Abdul M.; Kamara, Kelfala B. B.; Dubbink, Jan H.; Bolkan, Hakon A.; Grobusch, Martin P.

The rate and perioperative mortality of caesarean section in Sierra Leone

BMJ GLOBAL HEALTH

IF6.1

2019-09-04

OAAI

Holmer, Hampus; Kamara, Michael M.; Bolkan, Hakon Angell; van Duinen, Alex; Conteh, Sulaiman; Forna, Fatu; Hailu, Binyam; Hansson, Stefan R.; Koroma, Alimamy P.; Koroma, Michael M.; Liljestrand, Jerker; Lonnee, Herman; Sesay, Santigie; Hagander, Lars

For this one, let me take the risk: why surgical staff continued to perform caesarean sections during the 2014-2016 Ebola epidemic in Sierra Leone

BMJ GLOBAL HEALTH

IF6.1

2019-07-19

OAAI

Drevin, Gustaf; Alvesson, Helle Molsted; van Duinen, Alex; Bolkan, Hakon A.; Koroma, Alimamy P.; Von Schreeb, Johan

Caesarean section performed by medical doctors and associate clinicians in Sierra Leone

BRITISH JOURNAL OF SURGERY

IF8.7

2019-01-08

OAAI

van Duinen, A. J.; Kamara, M. M.; Hagander, L.; Ashley, T.; Koroma, A. P.; Leather, A.; Elhassein, M.; Darj, E.; Salvesen, O.; Wibe, A.; Bolkan, H. A.

研究方向