Abstract: A transactional medical data exchange provides a combination of public and private communication channels through which parties to a transaction, such as a medical care provider and a health insurance provider, may exchange information. When such an exchange is needed, the parties create records on the public communication channel that serve as a publicly viewable record that communication has begun. Information from these public records are used to share messages, along with messages, files, and other information related to care, via a private communication channel. Each private communication is sent and stored with unique authenticating data to form a chain of verifiable transactions. When communication is done, each party creates records on the public communication that request and acknowledge that communication is now complete and provide publicly viewable information that can be used to verify and authenticate each private message by itself, or in combination with others.

Abstract: Filled paper is made by providing an aqueous feed suspension containing filler and cellulosic fibre, coagulating the fibre and filler in the suspension by adding cationic coagulating agent, making an aqueous thinstock suspension by diluting a thickstock consisting of or formed from the coagulated feed suspension, adding anionic particulate material to the thinstock or to the thickstock from which the thinstock is formed, subsequently adding polymeric retention aid to the thinstock and draining the thinstock for form a sheet and drying the sheet.