Lawson W R
J Am Dent Assoc. 1980 Jul;101(1):32-7. doi: 10.14219/jada.archive.1980.0347.
Data from the first quarter of 1977 were used in this three-part survey to show current US trends in regard to charges and source of payment, the percent of dental visits by method of payment, and the probability of a dental visit by dental services.
本次三部分调查使用了1977年第一季度的数据,以展示美国目前在费用和支付来源、按支付方式划分的牙科就诊百分比以及按牙科服务划分的牙科就诊概率方面的趋势。