Stamford – “Medicine, Ethics and Halacha,” with Rabbi Dr. Aaron Glatt, executive vice president and chief administrative officer of Mercy Medical Center; at 11 a.m., “Metzitza b’Peh: Should this Controversial Circumcision Practice Be Allowed?”; at noon, “Bikkur Cholim: Do No Harm”; at 5:30 p.m.; “Vaccinations: Obligation or Option?”; at 4 p.m., Marjorie Glatt, Saw You at Sinai matchmaker, “The Inner Circle: The Role of Family in the Dating Process”; Young Israel of Stamford, 60 Oaklawn Ave.