The diaphragm has become the human body’s primary muscles as a result of its critical job in respiration.???? ?? ???? ???? ??? ?? ?????? ?????? ?? ????? ???? ?? ??? ???? ?? ????? ???? ???? ??? ?? ?? ?????? ???? ???? ?? ????? ???? ???? ??.Không s? d?ng máy b?m màng ?? b?m ho?c hút ch?t l?ng có ch?a ch?t r?n v??t quá m?c cho phép c?a nhà s?