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Subsequent events
9 Months Ended
Sep. 30, 2019
Subsequent events  
11. Subsequent events

The Company evaluates subsequent events that have occurred after the balance sheet date but before the financial statements are issued. There are two types of subsequent events: (1) recognized, or those that provide additional evidence with respect to conditions that existed at the date of the balance sheet, including the estimates inherent in the process of preparing financial statements, and (2) non-recognized, or those that provide evidence with respect to conditions that did not exist at the date of the balance sheet but arose subsequent to that date. The Company has evaluated subsequent events from September 30, 2019 through the date the financial statements were available to be issued and has determined that there are not any material subsequent events that require disclosure.