 NEW YORK--BUSINESS WIRE--Halper Sadeh LLP, a global investor rights law firm, is investigating whether CRH Medical Corporation NYSE: CRHM and its board of directors violated the federal securities laws andor breached their fiduciary duties to shareholders in connection with the proposed sale of CRH Medical to Well Health Technologies Corp. for 4.00 per share. On behalf of CRH Medical shareholders, Halper Sadeh LLP may seek increased consideration for shareholders, additional disclosures a 