| Operations Research for Health Care | Elsevier ScienceDirect Journals | Elsevier | Management Science and Operations Research; General Health Professions; Medicine (miscellaneous) | 2012 | Current | 
          
                                                                                        | Operations Research Forum | Springer Nature Journals | Springer Nature | General Computer Science; Computer Science (miscellaneous) | 2020 | current | 
          
                                                                                        | Operations Research Letters | Elsevier ScienceDirect Journals | North-Holland | Management Science and Operations Research; Software; Applied Mathematics; Industrial and Manufacturing Engineering | 1995 | Current | 
          
                                                                                        | Operative Orthopädie und Traumatologie | Springer Nature Journals | Springer Nature | Orthopedics and Sports Medicine; Surgery | 1997 | current | 
          
                                                                                        | Operative Techniques in Cardiac and Thoracic Surgery | Elsevier ScienceDirect Journals | W.B. Saunders | Medicine and Dentistry | 1996 | 1998 | 
          
                                                                                        | Operative Techniques in General Surgery | Elsevier ScienceDirect Journals | Elsevier | Surgery | 1999 | 2008 | 
          
                                                                                        | Operative Techniques in Neurosurgery | Elsevier ScienceDirect Journals | Elsevier | Clinical Neurology; Surgery | 1998 | 2005 | 
          
                                                                                        | Operative Techniques in Orthopaedics | Elsevier ScienceDirect Journals | W.B. Saunders | Orthopedics and Sports Medicine; Surgery | 1995 | Current | 
          
                                                                                        | Operative Techniques in Otolaryngology-Head and Neck Surgery | Elsevier ScienceDirect Journals | W.B. Saunders | Otorhinolaryngology; Surgery | 1995 | Current | 
          
                                                                                        | Operative Techniques in Plastic and Reconstructive Surgery | Elsevier ScienceDirect Journals | Elsevier | Otorhinolaryngology | 1995 | 2002 | 
          
                                                                                        | Operative Techniques in Sports Medicine | Elsevier ScienceDirect Journals | W.B. Saunders | Orthopedics and Sports Medicine; Surgery | 1995 | Current | 
          
                                                                                        | Operative Techniques in Thoracic and Cardiovascular Surgery | Elsevier ScienceDirect Journals | W.B. Saunders | Cardiology and Cardiovascular Medicine; Pulmonary and Respiratory Medicine; Surgery | 1998 | Current | 
          
                                                                                        | Opflow | JSTOR | Wiley | Biological Sciences ; Engineering ; Environmental Science ; Health Sciences ; Medicine & Allied Health ; Science & Mathematics ; Social Sciences ; Sustainability | 1975 | Current ( With 6 year embargo) | 
          
                                                                                        | Opflow | Wiley Journals | American Water Works Association | General Engineering; Engineering (miscellaneous); Water Science and Technology | 1997 | Current | 
          
                                                                                        | Ophelia | Taylor and Francis Journals | Taylor & Francis | Marine biology | 1997 | 2004 | 
          
                                                                                        | Ophthalmic And Physiological Optics | Wiley Journals | College of Optometrists | Sensory Systems; Optometry; Ophthalmology | 1997 | Current | 
          
                                                                                        | Ophthalmic Epidemiology | Taylor and Francis Journals | Taylor and Francis | Ophthalmology; Epidemiology | 1997 | current | 
          
                                                                                        | Ophthalmic Genetics | Taylor and Francis Journals | Taylor and Francis | Genetics(clinical); Ophthalmology; Pediatrics, Perinatology, and Child Health | 1997 | current | 
          
                                                                                        | Ophthalmic Plastic & Reconstructive Surgery | Lippincott Williams & Wilkins (Wolters Kluwer) Journals | Lippincott Williams & Wilkins (Wolters Kluwer) | Ophthalmology; Surgery | 1997 | Current | 
          
                                                                                        | Ophthalmology | Elsevier ScienceDirect Journals | Elsevier | Ophthalmology | 1995 | Current |