• ORAL SURGERY, ORAL MEDICINE, ORAL PATHOLOGY AND ORAL RADIOLOGY
• ORAL SURGERY, ORAL MEDICINE, ORAL PATHOLOGY, ORAL RADIOLOGY AND ENDODONTOLOGY( ELSEVIER-ClinicalKey ,2007-)
• ORAL SURGERY, ORAL MEDICINE, ORAL PATHOLOGY, ORAL RADIOLOGY, AND ENDODONTOLOGY( Elsevier ,1995-2011.)
• ORIGINS OF LIFE AND EVOLUTION OF BIOSPHERES
• ORTHOPAEDICS & TRAUMATOLOGY: SURGERY & RESEARCH
• ORTHOPAEDICS AND TRAUMA( Elsevier ,2009-2010.)
• ORTHOPAEDICS AND TRAUMA( ELSEVIER-ClinicalKey ,2009-)
• ORTHOPEDIC CLINICS OF NORTH AMERICA( Elsevier ,1997-2010.)
• ORTHOPEDIC CLINICS OF NORTH AMERICA( ELSEVIER-ClinicalKey ,2007-)
• OSTEOARTHRITIS AND CARTILAGE
• OSTEOPATHIC FAMILY PHYSICIAN
• OSTEOPOROSIS INTERNATIONAL
• OTOLARYNGOLOGIC CLINICS OF NORTH AMERICA( Elsevier ,1998-2010.)
• OTOLARYNGOLOGIC CLINICS OF NORTH AMERICA( ELSEVIER-ClinicalKey ,2007-)
• OTOLARYNGOLOGY - HEAD AND NECK SURGERY
• PACING AND CLINICAL ELECTROPHYSIOLOGY
• PAEDIATRIC AND PERINATAL EPIDEMIOLOGY
• PAEDIATRIC RESPIRATORY REVIEWS( Elsevier ,2000-2011.)
• PAEDIATRIC RESPIRATORY REVIEWS( ELSEVIER-ClinicalKey ,2007-)
• PAEDIATRIC RESPIRATORY REVIEWS.SUPLEMENTO
• PAEDIATRICS AND CHILD HEALTH
• PAIN
• PAIN MANAGEMENT NURSING
• PAIN MEDICINE
• PAIN PRACTICE
• PANCREATOLOGY
• PARASITE IMMUNOLOGY
• PARASITOLOGY INTERNATIONAL
• PARASITOLOGY RESEARCH
• PARASITOLOGY TODAY