全文获取类型
收费全文 | 141637篇 |
免费 | 44748篇 |
国内免费 | 1806篇 |
专业分类
耳鼻咽喉 | 2094篇 |
儿科学 | 5513篇 |
妇产科学 | 1924篇 |
基础医学 | 22438篇 |
口腔科学 | 6370篇 |
临床医学 | 19095篇 |
内科学 | 36686篇 |
皮肤病学 | 8653篇 |
神经病学 | 16919篇 |
特种医学 | 3539篇 |
外国民族医学 | 6篇 |
外科学 | 21160篇 |
综合类 | 6241篇 |
现状与发展 | 2篇 |
一般理论 | 37篇 |
预防医学 | 9637篇 |
眼科学 | 2711篇 |
药学 | 11020篇 |
53篇 | |
中国医学 | 3316篇 |
肿瘤学 | 10777篇 |
出版年
2024年 | 177篇 |
2023年 | 830篇 |
2022年 | 1967篇 |
2021年 | 4423篇 |
2020年 | 6983篇 |
2019年 | 12711篇 |
2018年 | 12281篇 |
2017年 | 13215篇 |
2016年 | 13582篇 |
2015年 | 14116篇 |
2014年 | 14976篇 |
2013年 | 15951篇 |
2012年 | 10081篇 |
2011年 | 10051篇 |
2010年 | 12633篇 |
2009年 | 8568篇 |
2008年 | 6366篇 |
2007年 | 5150篇 |
2006年 | 4618篇 |
2005年 | 4099篇 |
2004年 | 3429篇 |
2003年 | 3176篇 |
2002年 | 2911篇 |
2001年 | 1244篇 |
2000年 | 1075篇 |
1999年 | 620篇 |
1998年 | 385篇 |
1997年 | 355篇 |
1996年 | 296篇 |
1995年 | 231篇 |
1994年 | 200篇 |
1993年 | 159篇 |
1992年 | 137篇 |
1991年 | 96篇 |
1990年 | 95篇 |
1989年 | 85篇 |
1988年 | 71篇 |
1987年 | 63篇 |
1986年 | 63篇 |
1985年 | 55篇 |
1984年 | 57篇 |
1983年 | 51篇 |
1982年 | 70篇 |
1981年 | 77篇 |
1980年 | 47篇 |
1979年 | 47篇 |
1978年 | 23篇 |
1977年 | 33篇 |
1976年 | 35篇 |
1975年 | 30篇 |
排序方式: 共有10000条查询结果,搜索用时 15 毫秒
91.
Shisong Zhang Juan Li Yurui Wu Yuanjun Hu Chunhong Duan Meiyun Wang Zhongtao Gai 《Medicine》2015,94(39)
The purpose of this meta-analysis is to compare the relative merits among laparoscopic-assisted operations and laparotomy operations for patients with Hirschsprung disease.PubMed, Web of Science, and Wanfang databases were searched for the related articles. We analyzed dichotomous variables by estimating odds ratios (ORs) with their 95% confidence intervals (CIs) and continuous variables using the weighted mean difference (WMD) with the 95% CI. The random-effects model (REM) was used to combine the results. The outcome measures included operating time (OT), estimated blood loss (EBL), length of hospital stay (LOHS), mean first bowel movement (MFBM), and number of complications.Sixteen articles were included in the meta-analysis. These studies involved a total of 774 patients, 396 of whom underwent laparoscopic-assisted operations and 378 of whom underwent laparotomy operations. The EBL (WMD = −1.48, 95% CI = −1.82, −1.13), LOHS (WMD = −0.67, 95% CI = −0.86, −0.49), MFBM (WMD = −0.83, 95% CI = −1.05, −0.61), and number of complications (OR = 0.60, 95% CI = 0.40, 0.89) were significantly lower in laparoscopic-assisted operations than in laparotomy operations. The OT (WMD = 0.12, 95% CI = −0.05, 0.28) showed no significant differences between laparoscopic-assisted operations and laparotomy operations.Compared with laparotomy operations, laparoscopic-assisted operations are generally safer and more reliable for patients with Hirschsprung disease. 相似文献
92.
93.
Luis Miguel Azogil-López Juan José Pérez-Lázaro Patricia Ávila-Pecci Esther María Medrano-Sánchez María Valle Coronado-Vázquez 《Atencion primaria / Sociedad Espa?ola de Medicina de Familia y Comunitaria》2019,51(5):278-284
Aim
The purpose of this study is to find out whether telephone referral from Primary Health Care to Internal Medicine Consult manages to reduce waiting days as compared to traditional referral. This study also aims to know how acceptable is the telephone referral to general practitioners and their patients.Design
No blind randomized controlled clinical trial.Setting
Northern Huelva Health District.Participants
154 patients.Interventions
Patients referrals from intervention clinicians were sent via telephone consultation, whereas patients referrals from control clinicians were sent by traditional via.Measurements
Number of days from referral request to Internal Medicine Consult. Number of telephone and traditional referrals. Number of doctors and patients denied. Denial reasons.Results
A statistically significant difference was found between groups, with an average of 27 (21-34) days. Among General Practitioners, 8 of the first 58 total doctors after randomization and, subsequently, 6 of the 20 doctors of the test group refused to engage in the trial because they considered “excessive time and effort consuming”. 50% of patients referred by the 14 General Practitioners finally randomized to the intervention group were denied referral by telephone due to patient's complexity.Conclusions
Telephone referral significantly reduces waiting days for Internal Medicine consult. This type of referral did not mean an “excessive time and effort consuming” to General Practitioners and was not all that beneficial to complex patients 相似文献94.
Maite Cruz Piqueras Ainhoa Rodríguez García de Cortazar Joaquín Hortal Carmona Javier Padilla Bernáldez 《Gaceta sanitaria / S.E.S.P.A.S》2019,33(1)
Objective
To analyse and understand vaccination hesitancy discourses, particularly those of people who have decided not to vaccinate their sons and daughters.Methods
Qualitative study of five individual interviews and two focus groups with people who chose not to vaccinate their children in the province of Granada (Spain).Results
Mothers and fathers manifest a system of health beliefs different to the biomedical paradigm. From an ethical point of view, they justify their position based on the right to autonomy and responsibility for their decisions. Alleged specific reasons: they doubt administration of several vaccines simultaneously at an early age in a systematic way and without individualising each case; they fear adverse effects and do not understand the variations of the vaccination schedule.Conclusions
These vaccination hesitancy discourses respond to the individual vs collective conflict; parents defend their right to bring up their children without any interference from the state and focus their responsibility on the individual welfare of their sons and daughters, regardless of the consequences that their actions might have on the collective. In their management of risks, they consider those derived from vaccination more relevant than the individual or collective consequences of not doing so. The vaccines generating most doubts are the more controversial ones within the scientific world. Transparency in communication of adverse effects; authorities respect for other health/disease concepts; banishment of the term “anti-vaccines” from the media and scientific vocabulary, and developing spaces for dialogue are bridges to be built. 相似文献95.
María Cabrerizo Gloria Trallero María José Pena Amaia Cilla Gregoria Megias Carmen Mu?oz-Almagro Eva Del Amo Diana Roda Ana Isabel Mensalvas Antonio Moreno-Docón Juan García-Costa Nuria Rabella Manuel Ome?aca María Pilar Romero Sara Sanbonmatsu-Gámez Mercedes Pérez-Ruiz María José Santos-Mu?oz Cristina Calvo And the study group of “Enterovirus parechovirus infections in children under ?years-old Spain” PI- 《European journal of pediatrics》2015,174(11):1511-1516
96.
97.
98.
目的通过MRI技术观察偏瘫患者肩疼痛腋囊形态变化,为影像诊断提供依据。方法对47例偏瘫性肩疼痛患者(疼痛组)和47例正常肩部(对照组),运用MRI技术对肩关节腋囊进行测量,观察腋囊下肱盂韧带信号。结果偏瘫性肩疼痛的腋囊厚度(4.1±1.45)mm,高于对照组。腋囊腔高度(8.70±1.80)mm,腋囊腔宽度(4.31±0.56)mm,小于对照组。偏瘫性肩痛下肱盂韧带呈高信号出现率达21%,腋囊厚度与VAS呈正相关,与肩关节外展外旋呈负相关。结论脑中风中后期肩周炎是引起偏瘫性肩疼痛患者的常见原因,腋囊厚度是限制肩关节活动度的重要因素。 相似文献
99.
100.
Heather R. Nolan Juan Gurria Jose L. Peiro Sammy Tabbah Ramiro Diaz-Primera William Polzin Mounira Habli Foong-Yen Lim 《Journal of pediatric surgery》2019,54(6):1153-1158
PurposeCongenital high airway obstruction syndrome (CHAOS) is a devastating fetal condition of complete airway discontinuity resulting in significant hydrops and extreme lung hyperplasia. It is universally fatal with survival reported only in the rare spontaneous fistulization or EXIT intervention (Ex Utero Intrapartum Treatment). Even in these cases, mortality remains high, and current investigations are targeting prenatal interventions. This report describes our experience with management and fetal interventions for CHAOS, including laser laryngotomy.MethodsWe retrospectively reviewed all patients diagnosed with CHAOS at a single academic institution between 2006 and 2017.ResultsFifteen patients were identified. Eight had obstruction at the trachea and seven at the larynx. In the laryngeal obstructions, three expired shortly after birth, and one survived after spontaneous fistulization and subsequent EXIT to tracheostomy. The remaining three underwent in-utero treatment with laser laryngotomy. One had preterm premature rupture of membranes (PPROM), delivered 3 days post-operatively, and died. Two underwent EXIT to tracheostomy with one surviving to discharge and is currently 2 years old.ConclusionOur study demonstrates the outcomes of a large series of patients diagnosed with CHAOS. While mortality remains high, options for fetal intervention are being explored to allow alterations in the prenatal natural history and improve postnatal outcomes.Type of StudyRetrospective Treatment Study.Level of EvidenceLevel IV. 相似文献