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991.
992.
Short remission durations in therapy-related leukemia despite cytogenetic complete responses to high-dose cytarabine 总被引:1,自引:1,他引:1
Larson RA; Wernli M; Le Beau MM; Daly KM; Pape LH; Rowley JD; Vardiman JW 《Blood》1988,72(4):1333-1339
Seventeen patients with therapy-related myelodysplastic syndrome (t- MDS) or therapy-related acute nonlymphocytic leukemia (t-ANLL) were treated with single-agent high-dose cytarabine (HDAC; 1 to 3 g/m2 every 12 hours for 12 doses). The initial neoplasm was still present in eight patients when t-MDS/t-ANLL developed. Fifteen of the 16 patients with chromosomal abnormalities in bone marrow cells had loss or rearrangement of chromosomes 5 and/or 7. One patient had a t(15;17), and one had inadequate material for cytogenetic analysis. Twelve patients had normal metaphase cells (3% to 71%). Indications for HDAC therapy were progressive pancytopenia in 13 patients or rising blast count in four. Five patients died of marrow hypoplasia following therapy. Four others had refractory t-ANLL and died within the subsequent 5 months. Only one of ten patients with a poor performance status (PS greater than or equal to 2 using the ECOG scale) achieved a complete remission, but all seven patients with a good performance status (PS less than or equal to 1) had a complete remission. Hematologic remissions were achieved in 8 patients (47%) after one (6 patients) or two (2 patients) induction courses and were confirmed by recovery of a 100% normal marrow karyotype in six of the seven patients who were retested. Patients in remission received one to four consolidation courses with HDAC alternating with cytarabine/doxorubicin, but seven relapsed within 8 months (median remission duration, 5 months). In every case, the original chromosomal abnormality reappeared at relapse. HDAC has a high response rate for good-performance patients with t-MDS/t-ANLL, but complete remissions are short even when confirmed cytogenetically and consolidated intensively. 相似文献
993.
Sexual abuse of children has recently been recognized as a social and legal problem, although the phenomenon has probably been present throughout the history of humankind. Child and adolescent psychiatric and mental health nurses must be aware of the legal implications of assessing, diagnosing or treating child victims of sexual abuse. The focus of this paper is on the legal implications of protecting children from sexual abuse, procedures for prosecuting perpetrators of child sexual abuse, and the constitutional implications of reform. 相似文献
994.
Osteotomies of the mandible and/or maxilla (orthognathic surgery) are common procedures for correcting facial defects. Radiographs of these patients are routinely obtained, and the radiologist must be aware of the normal postoperative appearance as well as surgical complications that may occur. This article presents the common surgical procedures done (sagittal split, vertical subcondylar, genioplasty mandibular osteotomies; and Le Fort I and mid-palatal split maxillary osteotomies) and the routine appearance of uncomplicated procedures on posteroanterior skull and panoramic radiographs. The metallic immobilization devices and orthodontic appliances are also described. 相似文献
995.
Kirsten E. Austad BS Jerry Avorn MD Jessica M. Franklin PhD Mary K. Kowal BA Eric G. Campbell PhD Aaron S. Kesselheim MD JD MPH 《Journal of general internal medicine》2013,28(8):1064-1071
BACKGROUND
Increasingly, medical school policies limit pharmaceutical representatives’ access to students and gifts from drugmakers, but little is known about how these policies affect student attitudes toward industry.OBJECTIVE
To assess interactions between trainees and the pharmaceutical industry, and to determine whether learning environment characteristics influence students’ practices and attitudes.DESIGN, PARTICIPANTS
We conducted a cross-sectional survey with a nationally-representative sample of first- and fourth-year medical students and third-year residents, stratified by medical school, including ≥ 14 randomly selected trainees at each level per school.MAIN MEASURES
We measured frequency of industry interactions and attitudes regarding how such interactions affect medical training and the profession. Chi-squared tests assessed bivariate linear trend, and hierarchical logistic regression models were fitted to assess associations between trainees’ attitudes and their schools’ National Institutes of Health (NIH) funding levels and American Medical Student Association (AMSA) PharmFree Scorecard grades reflecting industry-related conflict of interest policies.KEY RESULTS
Among 1,610 student (49.3 % response rate) and 739 resident (43.1 %) respondents, industry-sponsored gifts were common, rising from 33.0 % (first-year students) to 56.8 % (fourth-year students) and 54 % (residents) (p?<?0.001). These gifts included meals outside the hospital (reported by 5 % first-year students, 13.4 % fourth-year students, 27.5 % residents (p?<?0.001)) and free drug samples (reported by 7.4 % first-year students, 14.1 % fourth-year students, 14.3 % residents (p?<?0.001)). The perception that industry interactions lead to bias was prevalent, but the belief that physicians receive valuable education through these interactions increased (64.1 % to 67.5 % to 79.8 %, p?<?0.001). Students in schools receiving more NIH funding reported industry gifts less often (OR?=?0.51, 95 % CI: 0.38–0.68, p?<?0.001), but the strength of institutional conflict of interest policies was not associated with this variable.CONCLUSIONS
Despite recent policy changes, a substantial number of trainees continue to receive gifts from pharmaceutical representatives. We found no relation between these outcomes and a school’s policies concerning interactions with industry. 相似文献996.
997.
998.
999.
Gregg M. Stave MD MPH JD Joseph J. Mignogna MD Gwendolyn S. Powell MD MPH Christine M. Hunt MD 《American journal of preventive medicine》1999,16(4):224-306
Hemochromatosis is a common inherited disorder of iron metabolism with significant health consequences for the employed population. Although screening for hemochromatosis has been recommended, workplace screening programs remain uncommon. In the first year of a newly initiated corporate screening program, 1968 employees were tested. The screening algorithm included measurement of serum iron and transferrin and subsequent ferritin levels in those employees with elevated iron/transferrin ratios. Thirteen percent of men and 21% of women had elevated iron/transferrin ratios. Of these, 14 men and 2 women had elevated ferritin levels. Of these 16, three had liver biopsies and all three have hemochromatosis. The cost of the screening program was $27,850. The cost per diagnosis was $9283 and the cost per year of life saved was $928. These costs compare very favorably with other common workplace screening programs. Several barriers to obtaining definitive diagnoses on all patients with a positive screening result were identified; strategies to overcome these barriers would further enhance the cost effectiveness of the program. We conclude that workplace hemochromatosis screening is highly cost effective and should be incorporated into health promotion/disease prevention programs. 相似文献
1000.