全文获取类型
收费全文 | 241篇 |
免费 | 22篇 |
国内免费 | 2篇 |
专业分类
儿科学 | 8篇 |
妇产科学 | 1篇 |
基础医学 | 33篇 |
口腔科学 | 6篇 |
临床医学 | 32篇 |
内科学 | 56篇 |
皮肤病学 | 5篇 |
神经病学 | 21篇 |
特种医学 | 9篇 |
外科学 | 11篇 |
综合类 | 25篇 |
预防医学 | 23篇 |
眼科学 | 3篇 |
药学 | 20篇 |
肿瘤学 | 12篇 |
出版年
2022年 | 1篇 |
2021年 | 6篇 |
2020年 | 2篇 |
2019年 | 1篇 |
2018年 | 5篇 |
2017年 | 3篇 |
2016年 | 6篇 |
2015年 | 9篇 |
2014年 | 10篇 |
2013年 | 13篇 |
2012年 | 9篇 |
2011年 | 13篇 |
2010年 | 11篇 |
2009年 | 21篇 |
2008年 | 18篇 |
2007年 | 10篇 |
2006年 | 5篇 |
2005年 | 9篇 |
2004年 | 8篇 |
2003年 | 5篇 |
2002年 | 9篇 |
2001年 | 3篇 |
2000年 | 9篇 |
1999年 | 3篇 |
1998年 | 7篇 |
1997年 | 8篇 |
1996年 | 9篇 |
1995年 | 2篇 |
1994年 | 7篇 |
1993年 | 14篇 |
1992年 | 6篇 |
1991年 | 3篇 |
1989年 | 3篇 |
1988年 | 2篇 |
1987年 | 1篇 |
1986年 | 2篇 |
1985年 | 2篇 |
1984年 | 1篇 |
1982年 | 1篇 |
1981年 | 3篇 |
1980年 | 1篇 |
1979年 | 1篇 |
1977年 | 2篇 |
1975年 | 1篇 |
排序方式: 共有265条查询结果,搜索用时 187 毫秒
51.
52.
Jennifer K Carroll Kevin Fiscella Sean C Meldrum Geoffrey C Williams Christopher N Sciamanna Pascal Jean-Pierre Gary R Morrow Ronald M Epstein 《Journal of the American Board of Family Medicine》2008,21(2):118-127
BACKGROUND: The 5A (Ask, Advise, Agree, Assist, Arrange) model, used to promote patient behavior changes in primary care, can also be applied to physical activity. Our goal was to assess primary care physicians' use of the 5A model in discussions with underserved populations about physical activity. METHODS: We analyzed 51 audio-recorded, transcribed office visits on randomly selected patient care days and after-visit patient surveys with adults in 2 community health centers in Rochester, New York. RESULTS: The patient sample was 51% African-American and predominantly female (70%), with the majority having a high school-level education or less (66%) and an annual household income < dollars 39,000 (57%). Physical activity was discussed during 19 of the 51 visits, which included 16 (84%) visits with "Ask"; 10 (53%) with "Advise"; 4 (21%) with "Agree"; 5 (26%) with "Assist"; and 0 with "Arrange" statements. Most discussions of physical activity contained several Ask or Advise statements but few Agree, Assist, or Arrange statements. CONCLUSION: Communication about physical activity that included Agree, Arrange, and Assist statements of the 5A model was infrequent. Health promotion interventions in underserved populations should target these steps and prompt patients to initiate communication to improve physical activity. 相似文献
53.
NR Marmorstein WG Iacono & CN Markey 《Cephalalgia : an international journal of headache》2009,29(1):38-47
Migraine headaches and depression often co-occur within individuals, and both syndromes run in families. However, knowledge about how these disorders relate across generations, as well as how migraine relates to other forms of psychopathology, is sparse. This study examined risk for migraine among female adolescent offspring of parents with different types of psychopathology. The sample was drawn from the Minnesota Twin Family Study, a community-based study of adolescents and their families ( n = 674, 17-year-old female adolescents and their biological parents). Diagnoses of maternal, paternal and offspring major depression, antisocial behaviour, alcohol dependence and drug dependence were based on structured interviews. Migraine headaches in each family member were assessed via interviews with the mother. Parental depression, antisocial behaviour and drug dependence were associated with offspring migraine. These associations mostly remained significant even when parental migraine and the corresponding type of psychopathology in offspring were adjusted for. In contrast, there were no significant associations between parental psychopathology and offspring stomach problems, indicating that these associations did not extend to all offspring somatic symptoms. These results emphasize the need to look at antisocial behaviour and substance-related problems when examining associations between migraine and psychopathology, and indicate that more research on inter-generational links between migraine and psychopathology is needed. 相似文献
54.
55.
Vesicular Acetylcholine Transporter Alters Cholinergic Tone and Synaptic Plasticity in DYT1 Dystonia
56.
57.
Fifty four children were studied 1-14 (mean 5.6) years after fabrications of illness had been identified. Thirty of the 54 children were living in families with their biological mothers and 24 were with other family members or in substitute families. Further fabrications were identified for 10 children who had been living with their mothers and there were 'other concerns' for a further eight children. Thirteen children residing with mother and 14 not residing with mother at follow up had a range of disorders including conduct and emotional disorders, and problems related to school, including difficulties in attention and concentration and non-attendance. Overall, 20 children (49% of those successfully followed up) had outcomes that were considered to be unacceptable. 相似文献
58.
O Abbas CN Wieland LJ Goldberg 《Journal of the European Academy of Dermatology and Venereology》2011,25(2):175-180
Background Epidermolytic acanthoma (EA) is an uncommon cutaneous entity that typically presents as a solitary lesion, or, less commonly, as multiple or disseminated discrete lesions. It usually appears at or after middle‐age, and has been reported in various locations including the face, trunk, extremities and genitalia. Histopathologically, EA shows epidermolytic hyperkeratosis (EHK) involving either the entire thickness of the epidermis or just the granular and upper spinous layers. Objective and methods To describe the clinical and microscopic features of EA, we retrospectively reviewed all cases diagnosed as EA at the Skin Pathology Laboratory at Boston University between 1999 and 2009. Results Solitary EA is more common in men (65%) and usually presents as a hyperkeratotic papule on the trunk (45%) or extremities (25%). Histopathologically, all cases of solitary EA showed the classical features of hyperkeratosis, acanthosis and EHK. Three architectural patterns were observed on scanning magnification: papillomatous (55%), cup‐shaped (40%) and acanthotic (15%). Additional common features encountered included focal parakeratosis (85%), and a sparse to mild superficial perivascular lymphocytic infiltrate (90%). Conclusion This large case series of solitary EA reviews the clinical features of this entity and describes several new histological variants. 相似文献
59.