Correction

[摘要] The incorrect correspondence information was provided in the Case Report, “Inadvertent use of a levonorgestrel-releasing intrauterine device as postcoital contraception,” which appeared in the December 2010 issue.[1][1] The correct information is as follows: Correspondence Dr Adam Newman,

[学科分类] 卫生学

[关键词] friction factors;wind measurements;tsunami