democratic society.

Churches opposed to same-sex marriage will not be forced to perform or solemnize such marriages. But churches that support same-sex marriage are currently being prevented from solemnizing unions they believe in.

How and Why Respect for Religious Institutions Flourishes
In the U.S. Constitution, religious freedom is protected in two ways. The first way was also the way considered most radical at the time the first amendment was passed: by banning any establishment of religion by the government. As Thomas Jefferson put it, Americans erected "a wall of separation between church and state."

In the 18th century, this was a radical move. At that time, all European nations and most American colonies had official state churches. One of the reigning assumptions among Europeans and among Euro-Americans was the notion that manall ambiguous references were retained in the database for the next screening phase. All references with a title in a language other than English were stored in a dedicated RefWorks folder "Foreign language" for further screening.

References retained after initial screening were further scanned by abstract. If the information of the abstract was not sufficient to assess whether to include or remove a reference, the full text file of the publication was screened. Full text portable document format (PDF) files that were not freely accessible online were obtained through the library of the Institute of Tropical Medicine (ITM). Publications in Dutch, French, Portuguese, Spanish and Thai languages were handled by one of the authors (PB) and another colleague. Full text publications were screened according to the following inclusion criteria: