Breast cancer radiation therapy	Level of evidence	Recommendation strength
4.1	Whole breast radiation therapy after lumpectomy[24]	I	A
4.2	Radiation to chest wall and regional lymph nodes after mastectomy and ≥N2[25]	I	A
4.3	Radiation to chest wall and regional lymph nodes after mastectomy and N1[26]	I	A
4.4	Radiation to chest wall after mastectomy and ≥T3[27]	II	A