ɪn lˈeɪt nˈaɪntiːnhˈʌndɹɪd sˈɪksti θɹˈiː, hˈɪŋkɪnz ˌʌndɚwˈɛnt ɐ kˈɪdni stˈoʊn sˈɜːdʒɚɹi, wˌɪtʃ lˈɛd tʊ ɐ nˈaɪndˈeɪ kˈoʊmə ænd nˌɪɹdˈɛθ ɛkspˈiəɹɪəns.
In late 1963, Hinkins underwent a kidney stone surgery, which led to a nine-day coma and near-death experience.