Cervical length measurement in nulliparous women at term by ultrasound & its relationship to spontaneous onset of labour. - Mukherji, Joydev; Bhadra, Avishek; Ghosh, Suhas Kumar; Hazra, Avijit; Anant, Monika; Bhattacharya, Subir Kumar; Das, Bibekananda; Banu, Shabnam (Indian Journal of Medical Research, 2017)