Affiliation: | 1. Division of Infectious Diseases, Carver College of Medicine, University of Iowa, Iowa City, IA, USA;2. Carver College of Medicine, University of Iowa, Iowa City, IA, USA;3. Division of Infectious Diseases and Geographic Medicine, Stanford University School of Medicine, Stanford, CA, USA;4. Palo Alto Medical Foundation, Toxoplasma Serology Laboratory, Palo Alto, CA, USA |