[1] Indonesian Soc Digest Surg, Jakarta, Indonesia
[2] Fatmawati Cent Gen Hosp, Dept Surg, Jakarta, Indonesia
[3] M Soewandhi Dist Hosp, Dept Surg, Surabaya, Indonesia
[4] Lambung Mangkurat Univ, Ulin Dist Hosp, Fac Med, Dept Surg, Banjarmasin, Indonesia
[5] Gajah Mada Univ, Dr Sardjito Cent Gen Hosp, Fac Med, Dept Surg, Yogyakarta, Indonesia
[6] Andalas Univ, M Djamil Cent Gen Hosp, Fac Med, Dept Surg, Padang, Indonesia
[7] Udayana Univ, Sanglah Cent Gen Hosp, Fac Med, Dept Surg, Denpasar, Indonesia
[8] Brawijaya Univ, Fac Med, Dept Surg, Syaiful Anwar Dist Hosp, Malang, Indonesia
[9] Diponegoro Univ, Dr Karyadi Cent Gen Hosp, Fac Med, Dept Surg, Semarang, Indonesia
[10] Airlangga Univ, Dr Soetomo Cent Gen Hosp, Fac Med, Dept Surg, Surabaya, Indonesia
[11] Persahabatan Cent Gen Hosp, Dept Surg, Jakarta, Indonesia
[12] Hasanudin Univ, Dr Wahidin Sudirohusodo Cent Gen Hosp, Fac Med, Dept Surg, Makasar, Indonesia