Optimising DTwP-containing vaccine infant immunisation schedules (OptImms) — a protocol for two parallel, open-label, randomised controlled trials oleh Sarah Kelly, Xinxue Liu, Katherine Theiss-Nyland, Merryn Voysey, Sarah Murphy, Grace Li, Mary Nyantaro, Meeru Gurung, Sudha Basnet, Bhishma Pokhrel, Sanjeev M. Bijukchhe, Agnes Eordogh, Ben Gombe, Ayoub Kakande, Simon Kerridge, Geofrey Kimbugwe, Sylvia Kusemererwa, Lawrence Lubyayi, Henry Luzze, Olga Mazur, Yama F. Mujadidi, Shamim Nabukenya, Walter-Rodney Nagumo, Tryphena Nareeba, Rabiullah Noristani, Peter O’Reilly, Andrew Roberts, Ganesh Shah, Sonu Shrestha, Laxman P. Shrestha, Surya B. Thapa, Freddie M. Kibengo, Arun K. Sharma, Alison Elliott, Shrijana Shrestha, Andrew J. Pollard