Facility and clinician level characteristics of medication abortion providers by region and country, cross-sectional survey of 2012 abortion practice in the US and Canada.

Facility and clinician level characteristics of medication abortion providers by region and country, cross-sectional survey of 2012 abortion practice in the US and Canada.按地区与国家划分的药物流产服务提供者的机构及临床医生层面特征：针对美国及加拿大2012年流产临床实践开展的横断面调查。