Pengaruh pendampingan suami terhadap proses persalinan kala I di 4 (empat) Klinik Bersalin Sidoarjo dan Surabaya = The influence of the husband attendance in the 1st stage of delivery process on the 4 different maternity clinics in Sidoarjo and Surabaya - Hilmi Yumni, author (Fakultas Ilmu Keperawatan Universitas Indonesia, 2006)