Greenbrook TMS Announces Preliminary First Quarter 2021 Operational and Financial Results

b'Greenbrook TMS Inc. (TSX: GTMS, NASDAQ: GBNH) (\xe2\x80\x9cGreenbrook\xe2\x80\x9d or the \xe2\x80\x9cCompany\xe2\x80\x9d) today announced certain preliminary unaudited operational and financial results for the first quarter ended March 31, 2021 (\xe2\x80\x9cQ1 2021\xe2\x80\x9d).