旅行 りょこう しゃ血栓 けっせん しょうであれば
ryokōshakessen shōdeareba

Noun
Da Copula

The "-eba" conditional form ("if/when…") of 旅行者血栓症

1. If/when traveler's thrombosis…; If there is traveler's thrombosis…

Ba Conditional
Medicine