Neither of these papers are keto diets specifically. It looks like these patients just had way more personal one on one time with their doctors, dedicated group sessions, and carb information. Without actual carb counts there’s no way to know if this is actually keto. Importantly, neither paper specified the high fat part of the keto diet, which makes me think neither paper actually supports keto.

Btw I’m not personally an anti-keto guy I just dislike mindless paper citations.