Nurse Michele Dwyer talks about Nurse Michele Dwyer talks about breast-feeding breast-feeding. Thoracic surgeon. Thoracic surgeon Jason Wallen, MD Jason Wallen, MD, describes, describes how to repair a sunken chest birth defect how to repair a sunken chest birth defect. Hand surgeon. Hand surgeon Michael Schreck, MD Michael Schreck, MD, discusses, discusses hand pain causes and treatments hand pain causes and treatments. .