1 BAMF Health, 109 Michigan St NW, Suite # 700, Grand Rapids, MI 49503, USA. Electronic address: harshad.kulkarni@outlook.de.
2 Division of Nuclear Medicine, Department of Radiology, University of Pennsylvania School of Medicine, Hospital of the University of Pennsylvania, 3400 Spruce Street, Philadelphia, PA 19104, USA. Electronic address: Abass.Alavi@pennmedicine.upenn.edu.