A process for preparing aromatic bisphenols, wherein the method comprises reacting an aromatic hydroxy compound with an alkylating agent having a functionality of two in the presence of a catalyst system. The plurality of participants use a plurality of endpoints to communicate on the conference. Collection of the at least one taggant from the area of investigation allows an investigator to assign the location of the dispersal step to a path taken by the subject between the transit point and the area of investigation. Edges are then stored into an edge buffer. The retractors are especially adapted to perform an atrial fibrillation surgical procedure. The tubular body has a minimum inner diameter of up to 2 mm and a maximum wall thickness of up to 0.