- O. M. Neotech, Inc. 1 study
- Oakwood Laboratories, LLC 2 studies
- OBEcure Ltd. 3 studies
- Objectif Recherche Vaccins SIDA 2 studies
- Obsessive Compulsive Foundation 3 studies
- Obstetrix Medical Group 7 studies
- OccuLogix 3 studies
- Ocera Therapeutics 6 studies
- Ochsner Health System 2 studies
- Oclassen Pharmaceuticals 2 studies
- Octagen Corporation 1 study
- Octapharma 4 studies
- Ocular Transplantation 2 studies
- Oculus Innovative Sciences, Inc. 1 study
- OcuSense, Inc 1 study
- Odense University Hospital 79 studies
- Office of Dietary Supplements (ODS) 35 studies
- Office of Rare Diseases (ORD) 33 studies
- Office of Research on Women's Health (ORWH) 14 studies
- Ohio State University 82 studies
- Ohio State University Comprehensive Cancer Center 34 studies
- Ohio University 2 studies
- Oita Red Cross Hospital 1 study
- Oita University 2 studies
- Oizumi Hospital 1 study
- Okayama University 2 studies
- Oklahoma Medical Research Foundation 1 study
- Oklahoma State University Center for Health Sciences 15 studies
- Olmsted Medical Center 1 study
- Olympic Medical 3 studies
- Omeros Corporation 6 studies
- Omneuron 1 study
- Omnicare Clinical Research 1 study
- OmniSonics Medical Technologies, Inc. 1 study
- OMRIX Biopharmaceuticals 6 studies
- Onassis Cardiac Surgery Centre 2 studies
- OncoGenex Technologies 3 studies
- Oncology Institute of Southern Switzerland 1 study
- Oncology Specialists, S.C. 8 studies
- Oncology Specialties, Alabama 3 studies
- Oncolytics Biotech 2 studies
- Oncoscience AG 3 studies
- Oncotech 1 study
- Oncotherapeutics 5 studies
- OncoVista, Inc. 1 study
- Ondine Research Laboratories 4 studies
- Ono Academic College 1 study
- Ono Pharma 29 studies
- Ontario Cancer Research Network 9 studies
- Ontario Clinical Oncology Group (OCOG) 27 studies
- Ontario Ginseng Growers Association 2 studies
- Ontario HIV Treatment Network 7 studies
- Ontario Hospital Association 1 study
- Ontario Mental Health Foundation 8 studies
- Ontario Ministry of Agriculture, Food and Rural Affairs 3 studies
- Ontario Ministry of Health and Long Term Care 35 studies
- Ontario Neurotrauma Foundation 7 studies
- ONY 2 studies
- ONYX Pharmaceuticals 11 studies
- Onze Lieve Vrouwe Gasthuis 2 studies
- Opexa Therapeutics, Inc. 3 studies
- Ophtec USA 2 studies
- Ophthalmic Consultants of Boston 3 studies
- Ophthalmic Consultants of Long Island 2 studies
- Ophthalmic PDT Study Group 1 study
- Ophthalmic Research Associates 2 studies
- Ophthalmological Association Edelweiss 1 study
- Ophthalmology department, University of California,Irvine 1 study
- Ophthotech Corporation 2 studies
- Opko Health, Inc. 5 studies
- Optimer Pharmaceuticals 5 studies
- Opto Eletronica S.A. 1 study
- OraPharma 2 studies
- Orasi Medical, Inc. 1 study
- OrbusNeich 2 studies
- Oregon Health and Science University 111 studies
- Oregon Research Institute 11 studies
- Oregon Social Learning Center 2 studies
- Oregon State University 3 studies
- Orexigen Therapeutics, Inc 11 studies
- Orfagen 2 studies
- Organ Transplant Institute, China 1 study
- Organisation for Oncology and Translational Research 2 studies
- Organization to Achieve Solutions in Substance Abuse (OASIS) 5 studies
- Organogenesis 6 studies
- Organon 116 studies
- Oridion 1 study
- ORION Clinical Services 3 studies
- Orion Corporation, Orion Pharma 19 studies
- Orlando Immunology Center 2 studies
- Orlando Regional Healthcare System 1 study
- Orlando Regional Medical Center 1 study
- OroScience, Inc. 1 study
- Orphan Australia 1 study
- Orphan Medical 7 studies
- Orphan Therapeutics 1 study
- Orphanetics Pharma Entwicklungs GmbH 1 study
- Orqis Medical Corporation 1 study
- Ortec International 2 studies
- Ortho Biotech Clinical Affairs, L.L.C. 14 studies
- Ortho Biotech Products, L.P. 39 studies
- Ortho Biotech, Inc. 23 studies
- Ortho Dermatologics 1 study
- Ortho Pharmaceuticals 6 studies
- Ortho-McNeil Janssen Scientific Affairs, LLC 10 studies
- Ortho-McNeil Neurologics, Inc. 39 studies
- Ortho-McNeil Pharmaceutical 8 studies
- Ortho-McNeil, Inc. 6 studies
- Orthofix, Inc. 2 studies
- OrthoLogic 1 study
- OrthoMediTec 1 study
- Orthopaedic Research Foundation 2 studies
- Orthovita 2 studies
- Osaka Acute Coronary Insufficiency Study Group 1 study
- Osaka City University 4 studies
- Osaka General Medical Center 4 studies
- Osaka Saiseikai Nakatsu Hospital 1 study
- Osaka University 6 studies
- OSCAR Study 1 study
- Osel, Inc. 3 studies
- OSF Saint Francis Medical Center 3 studies
- OSI Pharmaceuticals 46 studies
- Osiris Therapeutics 13 studies
- Oslo University College 2 studies
- Osmotica Pharmaceutical Corporation 1 study
- Ospedale L. Sacco – Polo Universitario 1 study
- Ospedale Misericordia e Dolce 1 study
- Ospedale Regionale Bellinzona e Valli 2 studies
- Ospedale Regionale di Locarno 2 studies
- Ospedale S. Giovanni Bosco 4 studies
- Ospedale Sacro Cuore - Don Calabria 1 study
- Ospedali Riuniti di Bergamo 7 studies
- Ospedali Riuniti Trieste 1 study
- Ossacur Inc. 1 study
- Osteogenesis Imperfecta Foundation 1 study
- Osteologix 1 study
- Osteopathic Heritage Foundations 4 studies
- Ostfold Hospital Trust 2 studies
- Oswaldo Cruz Foundation 8 studies
- Othera Pharmaceuticals 2 studies
- Otolaryngology Medical Clinic,University of California, Irvine 2 studies
- Otsuka America Pharmaceutical 40 studies
- Otsuka Beijing Research Institute 4 studies
- Otsuka Frankfurt Research Institute GmbH 3 studies
- Otsuka Pharmaceutical Co., Ltd. 36 studies
- Otsuka Pharmaceutical Development & Commercialization, Inc. 22 studies
- Otsuka Pharmaceutical, Inc., Philippines 2 studies
- Ottawa Fertility Centre 1 study
- Ottawa Health Research Institute 68 studies
- Oulu University Hospital 6 studies
- Our Lady of Mercy Medical Center 1 study
- Outcomes Research Consortium 29 studies
- Ovalum 3 studies
- Ovation Pharmaceuticals 6 studies
- Ovation Research Group 1 study
- Oxagen Ltd 2 studies
- Oxford BioMedica 8 studies
- Oxford Brookes University 1 study
- Oxford Radcliffe Hospitals NHS Trust 2 studies
- OXiGENE 4 studies
- OXO Chemie 1 study
- Oxo Chemie GmbH 2 studies
- OxThera 1 study
- OxyPharma 1 study
- Oy Foodfiles Ltd 1 study
- Oystershell NV 1 study
Clinical Trials Authorship and Review
Clinical Trials content is provided directly by the U.S. National Institutes of Health via ClinicalTrials.gov and is not reviewed separately by ClinicalTrialsFeeds.org. Every page of specific clinical trials information contains a unique identifier which can be used to find further details directly from the National Institutes of Health.
