Appendicectomy Bariatric Surgery Breast Biopsy Breast Reconstruction Cholecystectomy Colectomy Colostomy Haemorrhoid Removal Hernia Repair Mastectomy Parathyroidectomy Parotidectomy Rectal Resection Sigmoidoscopy Skin Biopsy Skin Lesion Excision Thyroidectomy Varicose Veins