Statement: the primary trial and the secondary trial do not have the same number of study groups.
Primary_evidence: INTERVENTION 1:    AeroForm Tissue Expander   AeroForm Tissue Expansion inflation with carbon dioxide by remote control   AeroForm Tissue Expander: The AeroForm Tissue Expander is a breast tissue expander implanted following mastectomy and activated by remote control to release small doses of carbon dioxide from an internal reservoir to fill and inflate the expander.
Secondary_evidence: INTERVENTION 1:    IUS Alone IUS alone imaging INTERVENTION 2:    Imagio (IUS+OA) IUS+OA imaging