Impact of a primary care partnership programme on accident and emergency attendances at a regional hospital in Singapore: a pilot study - Hong Choon Oh; Srinath Sridharan; Mei Foon Yap; Priscilla Sook Kheng Goh; Lyndia Sze Hui Lee; Narayan Venkataraman; Choon How How; Hoon Chin Lim (Singapore Medical Journal)