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来源:BMC Medical Research Methodology
作者:Anthony Blinkhorn;R Wendell Evans;Stacy M Carter;等
关键词:dental care;methods;...
来源:BMC Medical Research Methodology
作者:Anthony Blinkhorn;R Wendell Evans;Stacy M Carter;等
关键词:dental care;methods;...
来源:Archives of Public Health
作者:An Van Nieuwenhuyse;Pierre De Plaen;Ethel Brits;等
关键词:study design;sampling;...
来源:Archives of Public Health
作者:An Van Nieuwenhuyse;Pierre De Plaen;Ethel Brits;等
关键词:study design;sampling;...
来源:Molecules , 2013
作者:Xufen Yu
关键词:macrocycles;macrocyclization;...
使用许可:CC BY
来源:Animals , 2013
作者:Cindy Stern
关键词:animal-assisted interventions;evidence based practice;...
使用许可:CC BY