Is long-lasting mucosal elevation the only valid parameter when evaluating a lifting agent?

Stefano Pontone, Simone Manfredelli, Dimitri Krizzuk, Giovanni LeonettiDepartment of Surgical Sciences, “Sapienza” University of Rome, Rome, ItalyDear editorConsidering the relevance of the topic, our attention was strongly attracted by the study reported by Al-Taie et al. This study, based on our experience, begs some questions. Although the limitations of the lifting agent have been correctly identified by the authors, it would be useful to know the timing and details of the procedures used for preparation of blood, plasma, and serum.