January 28, 2009 article From Randomized Controlled Trials to Observational Studies The American Journal of Medicine DOI: 10.1016/j.amjmed.2008.09.030 OpenAlex Authors 0 Author list not loaded yet. Cited by 2 stored of 359 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 Observational Data for Integrated Maternity Care: Experiences with a Data-Infrastructure for Parents and Children in the Netherlands 2023 International Journal of Integrated Care article Health Professions Medical Coding and Health Information Open access 18 citations Estimating the Effect of Early Treatment Initiation in Parkinson's Disease Using Observational Data 2020 Movement Disorders article Medicine Parkinson's Disease Mechanisms and Treatments Open access 14 citations 2 results References 0