BCG skin reactions by 2 months of age are associated with better survival in infancy: a prospective observational study from Guinea-Bissau oleh Peter Aaby, Adam Roth, Kristoffer Jarlov Jensen, Frederik Schaltz-Buchholzer, Mike Berendsen, Morten Bjerregaard-Andersen, Marcus Kjær Sørensen, Ivan Monteiro, Christine Stabell Benn