The Lancet is a famous and respected British medical journal, founded in 1823.
I don't think that Rinaldi has actually written anything for the Lancet. He's in an emotional state and is just chattering for the sake of it, trying to sound cheerful and positive. You can see this from the disjointed and emotional style of language. I think that he mentioned the English language magazine and the idea of FH translating the almost certainly non-existent article as a way of appearing positive. It's almost as if he's saying 'I'm doing well, you're doing well, you're going to recover and we're going to do great things together.' The first line of the speech says it all 'We're all splendid.' It's an expression of desperate optimism in the midst of the senseless carnage of war.