[1] Cairo Univ, Fac Nursing, Med Surg Nursing Dept, Cairo, Egypt
[2] Princess Nourah bint Abdulrahman Univ, Coll Nursing, Dept Med Surg Nursing, Riyadh, Saudi Arabia
[3] Univ Stirling, Fac Hlth Sci & Sport, Dept Publ Hlth, Stirling, Scotland
[4] Al Azhar Univ, Fac Med, Chest Dept, Dumyat, Egypt
[5] Helwan Univ, Fac Med, Chest Med Dept, Cairo, Egypt
[6] Al Azhar Univ, Fac Med, Chest Dept, Cairo, Egypt
[7] Aswan Univ, Fac Med, Chest Dept, Aswan, Egypt