Qat chewing and water pipe (mada'a) smoking in Yemen: a necessary clarification when studying health effects on oral mucosa.
Chaouachi
Kamal T
KT
D029754:Catha / Q000009:adverse effects*; D006801:Humans; D009061:Mouth Mucosa / Q000187:drug effects*; D012907:Smoking / Q000009:adverse effects*; D015006:Yemen