HEALTH AND REHABILITATION <HRP> SETS FIRST DIVI Health and Rehabilitation Properties Trust said it declared its initial dividend of 55 cts per share for the quarter ending March 31, 1987. The dividend is payable May 20 to shareholders of record April 20, 1987, it said. The dividend includes five cts attributable to the period between Dec 23 and 31, 1986, and 50 cts attributable to the first quarter of 1987, ending March 31, 1987.