Cost and efficiency of public sector sexually transmitted infection clinics in Andhra Pradesh, India. - Dandona, Lalit; Sisodia, Pratap; Prasad, TLN; Marseille, Elliot; Rao, M Chalapathi; Kumar, A Anod; Kumar, SG Prem; Ramesh, YK; Over, Mead; Someshwar, M; Kahn, James G (BMC Health Services Research, 2005)