Teens, join Susquehanna Health for a program on “Cardiology Services” on Wednesday, Jan. 21, 6-7:30 p.m., in The Williamsport Hospital & Medical Center, 5 North Classroom. Heart and vascular problems cause multiple complications for the human body.Learn about the careers and educational requirements involved in diagnosis and treatment. Tour the Cath Lab and the Heart & Vascular Center. Registration is required at susquehannahealth.org/Volunteers/HealthCareers4U or call 321-2433. Parents are welcome but do not need to register.