tokens: Higher NK activity could be predicted by the perception of high quality emotional support from a spouse or intimate other , perceived social support from the patient 's physician , estrogen receptor -negative tumor status , having an excisional biopsy as surgical treatment , and actively seeking social support as a major coping strategy ( R2 = 0.33 , F ( 5 , 55 ) = 5.5 , p less than 0.0004 ) .