When praying for someone's refuah shlema (fully recovered health), is it halakhically required to use their additional names on top of their first names? Is it simply custom?
If someone is named Ya'akov Yosef ben Sarah Leah, for example, is it required to say all four names (Ya'akov, Yosef, Sarah and Leah) when praying for their refuah shlema? Or would it suffice to simply say "Ya'akov ben Sarah"?