Kinship ties across the lifespan in human communities by Koster, J, Lukas, D, Nolin, D, Power, E, Alvergne, A, Mace, R, Ross, C, Kramer, K, Greaves, R, Caudell, M, Macfarlan, S, Schniter, E, Quinlan, R, Mattison, S, Reynolds, A, Sum, C, Massengill, E