| Further advances in the chemistry of mannich bases | Tetrahedron | 1990 | 324 |
| The diagnosis of small bowel bacterial overgrowth. Reliability of jejunal culture and inadequacy of breath hydrogen testing | Gastroenterology | 1990 | 276 |
| The selective travelling salesman problem | Discrete Applied Mathematics | 1990 | 250 |
| Can Severe Fiscal Contractions Be Expansionary? Tales of Two Small European Countries | NBER Macroeconomics Annual | 1990 | 246 |
| Type 2 autoimmune hepatitis and hepatitis C virus infection | Lancet, The | 1990 | 243 |
| Primary chemotherapy and delayed surgery (neoadjuvant chemotherapy) for osteosarcoma of the extremities. The Istituto Rizzoli Experience in 127 patients treated preoperatively with intravenous methotrexate (high versus moderate doses) and intraarterial cisplatin | Cancer | 1990 | 203 |
| The deployment of visual attention in the intact field of hemineglect patients | Cortex | 1990 | 191 |
| Long-term oral branched-chain amino acid treatment in chronic hepatic encephalopathy. A randomized double-blind casein-controlled trial. The Italian Multicenter Study Group | Journal of Hepatology | 1990 | 168 |
| Nocturnal paroxysmal dystonia with short-lasting attacks: three cases with evidence for an epileptic frontal lobe origin of seizures | Epilepsia | 1990 | 165 |
| Characterization of humified compounds by extraction and fractionation on solid polyvinylpyrrolidone | Journal of Chromatography A | 1990 | 161 |
| Lymphohistiocytic T-cell lymphoma (anaplastic large cell lymphoma CD30+/Ki-1 + with a high content of reactive histiocytes) | Histopathology | 1990 | 156 |
| Myelofibrosis with myeloid metaplasia: clinical and haematological parameters predicting survival in a series of 133 patients | British Journal of Haematology | 1990 | 152 |
| Gallbladder motility in cholesterol gallstone disease. Effect of ursodeoxycholic acid administration and gallstone dissolution | Gastroenterology | 1990 | 110 |
| Endocrine function and morphological findings in patients with disorders of the hypothalamo-pituitary area: a study with magnetic resonance | Archives of Disease in Childhood | 1990 | 105 |
| Assessment of portal hypertension by endoscopic ultrasonography | Gastrointestinal Endoscopy | 1990 | 105 |
| Variability of growth hormone response to pharmacological and sleep tests performed twice in short children | Journal of Clinical Endocrinology and Metabolism | 1990 | 104 |
| Ubidecarenone in the treatment of mitochondrial myopathies: a multi-center double-blind trial | Journal of the Neurological Sciences | 1990 | 103 |
| Spectroscopic studies on Cu2Zn2SOD: a continuous advancement of investigation tools | Coordination Chemistry Reviews | 1990 | 102 |
| Encapsulation of lanthanide ions in calixarene receptors. A strongly luminescent terbium(3+) complex | Journal of the Chemical Society Chemical Communications | 1990 | 100 |
| Ultrastructural cytochemistry of the mammalian cell nucleolus | Journal of Histochemistry and Cytochemistry | 1990 | 98 |
| Hyperplastic and hypertrophic growth of lateral muscle in Dicentrarchus labrax (L.). An ultrastructural and morphometric study | Anatomy and Embryology | 1990 | 93 |
| Howell-Jolly body counting as a measure of splenic function. A reassessment | International Journal of Laboratory Hematology | 1990 | 91 |
| Natural distribution and occurrence of coenzyme Q homologues | Membrane Biochemistry | 1990 | 87 |
| Ambulatory 24-hr pH monitoring of esophagus, fundus, and antrum. A new technique for simultaneous study of gastroesophageal and duodenogastric reflux | Digestive Diseases and Sciences | 1990 | 86 |
| Solid distribution in vessels stirred with multiple impellers | Chemical Engineering Science | 1990 | 81 |
