Statement: the secondary trial administers 150 mg/Day more of Magnesium Oxide to its patients than the primary trial does.
Primary_evidence: INTERVENTION 1:    Decision Support Workshop   The decision support workshop will be 2 hours in duration on the morning of the consultation and will be facilitated by a dedicated social worker from psycho-oncology.   Decision Support Workshop: Incorporates the key components of shared decision-making and decision support with the philosophy of delivering supportive care to cancer patients.   Surgeon (30 mins): treatment options for breast reconstruction with indications/ contraindications, advantages / disadvantages, expected post-operative course, aesthetic result and complications with probabilities   Registered nurse (30 mins): preparing for surgery, postoperative recovery and how to navigate the health care system   Social worker (30 mins): values clarification exercise   Breast reconstruction patient volunteer (30 mins) questions and answers about her personal experience INTERVENTION 2:    Standard Care   Routine pre-consultation education
Secondary_evidence: INTERVENTION 1:    Low Dose Magnesium Oxide (800 mg/Day)   Week 2:   Patients take one 400 mg tablet of magnesium oxide orally (PO) daily (QD).   Week 3:   Patients take two 400 mg tablet of magnesium oxide orally (PO) daily (QD).   Weeks 4-9:   Patients take two 400 mg tablet of magnesium oxide orally (PO) daily (QD). INTERVENTION 2:    High Dose Magnesium Oxide (1200 mg/Day)   Week 2:   Patients take one 400 mg tablet of magnesium oxide orally (PO) daily (QD).   Week 3:   Patients take two 400 mg tablet of magnesium oxide orally (PO) daily (QD).   Weeks 4-9:   Patients take three 400 mg tablet of magnesium oxide orally (PO) daily (QD).