[1]https://www./health-and-mortality/summertime-and-the-livin-is-easy-and-longer/#:~:text=Mortality rates are lower in the summertime, yielding,which most deaths in the United States occur.
[2]https://www./cell-metabolism/fulltext/S1550-4131(21)00367-3#
[3]https://www.nia./health/safety/cold-weather-safety-older-adults
[4]https://www./science/article/abs/pii/S0360132316304693
[5]https://www./science/article/abs/pii/S0048969714008080