National Center for Biotechnology Information NCBI NLM MEDLINE humans pubmed abstract nih national institutes of health national library of medicine research support non-u.s. gov't adult female male aged middle aged young adult Surveys and Questionnaires 80 and over breast neoplasms / diagnosis* patient education as topic / methods* social support breast neoplasms / therapy* self-help groups knowledge pmid:26228234 pmc4705354 doi:10.2196/jmir.4721 deanna j attai michael s cowher jeffrey landercasper breast neoplasms / psychology health education / methods* patient outcome assessment* self report* social media*