February 01, 2011 article Open access The Bowel Function Index for Evaluating Constipation in Pain Patients: Definition of a Reference Range for a Non-Constipated Population of Pain Patients Journal of International Medical Research DOI: 10.1177/147323001103900106 Full text (OA) OpenAlex Authors 0 Author list not loaded yet. Cited by 2 stored of 105 Search Sort Most cited Newest Oldest Patent citations Title Any typearticle review book-chapter conference-paper preprint dissertation book dataset other Any fieldAgricultural and Biological Sciences Arts and Humanities Biochemistry, Genetics and Molecular Biology Business, Management and Accounting Chemical Engineering Chemistry Computer Science Decision Sciences Dentistry Earth and Planetary Sciences Economics, Econometrics and Finance Energy Engineering Environmental Science Health Professions Immunology and Microbiology Materials Science Mathematics Medicine Neuroscience Nursing Pharmacology, Toxicology and Pharmaceutics Physics and Astronomy Psychology Social Sciences Veterinary Open access German Expert Consensus on Opioid-Induced Constipation (OIC): Recommendations and a Treatment Algorithm for Clinical Practice 2026 Journal of Clinical Medicine article Medicine Gastrointestinal motility and disorders Open access 1 citations Tapentadol Prolonged Release in Patients with Chronic low back Pain: Real-World Data from the German Pain eRegistry 2021 Pain Management article Medicine Pain Management and Opioid Use Open access 12 citations 2 results References 0