<https://onco.com/about-cancer/cancer-types/gallbladder-cancer/#webpage>
<http://schema.org/description>
"Gallbladder cancer causes, risk factors and prevention. An glance at the different environment and lifestyle related risk factors for gallbladder cancer."
<https://onco.com/about-cancer/cancer-types/gallbladder-cancer/causes/how-to-prevent/>