July 18, 2014 (La Mesa)-The Grossmont Healthcare District’s Dr. William C. Herrick Community Health Care Library, 9001 Wakarusa St. in La Mesa, will host a free senior discussion group program titled “Alzheimer’s Disease and Clinical Trials,” from 10 to 11 a.m. on Wednesday, Aug. 27. The public is invited to attend and RSVP is not required. The speaker will be Mark Dobrina, lead clinical trials specialist, Sharp Mesa Vista Hospital Research Dept.