Fig. 2From: In vivo optical endomicroscopy: two decades of translational research towards next generation diagnosis of eosinophilic esophagitisKey scientific, engineering, and clinical achievements throughout two decades of translational research. The eight milestones are indicated above the timeline in black. Below the timeline, the most fundamental literature reports (divided into first demonstration, first preclinical in vivo, and first-in-human) are listed in blueBack to article page