A survey was mailed to all active diplomates of the American Board of Dental Public Health in January of 1980 requesting information regarding activities for the period including January 1978 to December 1979. Eighty-two of the then 86 full-time active diplomates responded to the survey. Comparisons with the results of a survey conducted 11 years earlier by Johnson and Bernstein were made with respect to employment, primary activity within employment, and degree of participation in workshops, conferences and seminars. An analysis of results from the two surveys indicates few significant changes in many areas.
Since January 2020 Elsevier has created a COVID-19 resource centre with free information in English and Mandarin on the novel coronavirus COVID-19. The COVID-19 resource centre is hosted on Elsevier Connect, the company's public news and information website. Elsevier hereby grants permission to make all its COVID-19-related research that is available on the COVID-19 resource centre -including this research content -immediately available in PubMed Central and other publicly funded repositories, such as the WHO COVID database with rights for unrestricted research re-use and analyses in any form or by any means with acknowledgement of the original source. These permissions are granted for free by Elsevier for as long as the COVID-19 resource centre remains active. a r c h s o c e s p o f t a l m o l . 2020;95(11):521-522
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