Comparison of the results of in-person and mobile phone surveys for a health facility assessment in Tajikistan: A validation study protocol - Rachel Neill; Pablo Amor Fernandez; Ruchika Bhatia; Jigyasa Sharma; Kathryn Andrews; Sven Neelsen; Etoile Pinder; Marifat Abdullaev; Firuza Safarova; Mutriba Latypova; Mirja Channa Sjoblom; Tashrik Ahmed; et al. (PLoS ONE, 2025)