Gea A. Holtman

Groningen, GR 9700AD, Netherlands

Last Updated: 09/26/2026

Save publications for later

Sign Up

Not sure about your diagnosis?

Check Your Symptoms

Found 68 publications

Impact of a diagnostic strategy for appendicitis in children with acute abdominal pain in primary care: study protocol for a hybrid type 1 cluster randomised controlled trial.

Impact of a diagnostic strategy for appendicitis in children with acute abdominal pain in primary care: study protocol for a hybrid type 1 cluster randomised controlled trial.

Journal: Diagnostic and prognostic research

Published: February 13, 2026

Perceptions of hypnotherapy for children with functional abdominal pain: a qualitative study.

Perceptions of hypnotherapy for children with functional abdominal pain: a qualitative study.

Journal: Family practice

Published: September 05, 2025

Effectiveness of hypnotherapy for paediatric abdominal pain in primary care: a randomised controlled trial.

Effectiveness of hypnotherapy for paediatric abdominal pain in primary care: a randomised controlled trial.

Journal: The British journal of general practice : the journal of the Royal College of General Practitioners

Published: July 18, 2025

Using media to enhance paediatric patient recruitment for research in primary care.

Using media to enhance paediatric patient recruitment for research in primary care.

Journal: Primary health care research & development

Published: July 18, 2025

Effectiveness of hypnotherapy for paediatric abdominal pain in primary care: a randomised controlled trial.

Effectiveness of hypnotherapy for paediatric abdominal pain in primary care: a randomised controlled trial.

Journal: The British journal of general practice : the journal of the Royal College of General Practitioners

Published: July 18, 2025

Cost-effectiveness of a faecal calprotectin-guided referral strategy for children with chronic abdominal symptoms: a cluster randomised controlled trial.

Cost-effectiveness of a faecal calprotectin-guided referral strategy for children with chronic abdominal symptoms: a cluster randomised controlled trial.

Journal: The British journal of general practice : the journal of the Royal College of General Practitioners

Published: May 30, 2025

Cost-effectiveness of a fecal calprotectin guided referral strategy for children with chronic abdominal symptoms.

Cost-effectiveness of a fecal calprotectin guided referral strategy for children with chronic abdominal symptoms.

Journal: The British journal of general practice : the journal of the Royal College of General Practitioners

Published: May 30, 2025

Children with disorders of gut-brain interaction in primary care versus hospital care: A comparison of characteristics.

Children with disorders of gut-brain interaction in primary care versus hospital care: A comparison of characteristics.

Journal: Journal of pediatric gastroenterology and nutrition

Published: December 23, 2024

General practitioners' experiences with chronic abdominal symptoms and a faecal calprotectin guided referral strategy in children: A Dutch qualitative study.

General practitioners' experiences with chronic abdominal symptoms and a faecal calprotectin guided referral strategy in children: A Dutch qualitative study.

Journal: The European journal of general practice

Published: December 02, 2024

Accuracy of routine laboratory tests to predict mortality and deterioration to severe or critical COVID-19 in people with SARS-CoV-2.

Accuracy of routine laboratory tests to predict mortality and deterioration to severe or critical COVID-19 in people with SARS-CoV-2.

Journal: The Cochrane database of systematic reviews

Published: August 06, 2024

Variation in sensitivity and specificity of diverse diagnostic tests across health-care settings: a meta-epidemiological study.

Variation in sensitivity and specificity of diverse diagnostic tests across health-care settings: a meta-epidemiological study.

Journal: Journal of clinical epidemiology

Published: July 08, 2024

Trends in C reactive protein testing: a retrospective cohort study in paediatric ambulatory care settings.

Trends in C reactive protein testing: a retrospective cohort study in paediatric ambulatory care settings.

Journal: BMJ open

Published: June 10, 2024

Showing 1-12 of 68

Last Updated: 09/26/2026