[1] Natl Hosp Abuja, Dept Radiat Oncol, Abuja, Nigeria
[2] Univ Abuja, Coll Med, Abuja, Nigeria
[3] Project PINK BLUE Hlth & Psychol Trust Ctr, Abuja, Nigeria
[4] Miami Univ, Dept Sociol & Gerontol, Oxford, OH USA
[5] Miami Univ, Scripps Gerontol Ctr, Oxford, OH USA
[6] Univ Nigeria, Dept Psychol, Nsukka, Enugu, Nigeria
[7] Natl Hosp Abuja, Radiat & Clin Oncol Dept, Abuja, Nigeria
[8] Natl Hosp Abuja, Neurosurg Dept, Abuja, Nigeria
[9] Natl Hosp Abuja, Dept Radiol, Abuja, Nigeria
[10] Natl Hosp Abuja, Dept Med Phys, Abuja, Nigeria
[11] Asi Ukpo Comprehens Canc Ctr, Dept Radiotherapy, Calabar, Nigeria
[12] Ahmadu Bello Univ Teaching Hosp ABUTH, Dept Radiat Oncol, Zaria, Nigeria
[13] Gombe State Univ, Dept Radiol, Gombe, Nigeria
[14] Fed Teaching Hosp Gombe, Dept Radiotherapy & Oncol, Gombe, Nigeria
[15] Nigeria Sovereign Invest Author Lagos Univ Teachi, Dept Radiat Oncol, Lagos, Nigeria
[16] Univ Nigeria Teaching Hosp UNTH, Dept Radiat Oncol, Ituku Ozalla, Enugu, Nigeria
[17] Univ Ibadan, Univ Coll Hosp Ibadan, Ibadan, Nigeria
[18] Usman Danfodio Univ Teaching Hosp UDUTH, Dept Radiat Oncol, Sokoto, Nigeria
[19] Univ Benin Teaching Hosp UBTH, Dept Radiat Oncol, Ituku Ozalla, Edo, Nigeria
[20] Ahmadu Bello Univ, Ctr Energy Res & Training, Zaria, Nigeria
[21] Nigeria Atom Energy Commiss NAEC, Abuja, Nigeria
[22] Univ Abuja Teaching Hosp UATH, Dept Radiol, Abuja, Nigeria
[23] Univ Abuja Teaching Hosip UATH, Abuja, Nigeria
[24] Int Canc Expert Corps ICEC Inc, Washington, DC USA
[25] Univ Oxford, Oxford, England
[26] European Ctr Nucl Res CERN, Geneva, Switzerland