{Reference Type}: Journal Article {Title}: Seven- and 23-year-old Siblings with Papulonodular Lesions after Sun Exposure: A Quiz. {Author}: Neri D;Stieler KM;Vogt A;Ghoreschi K;Blume-Peytavi U; {Journal}: Acta Derm Venereol {Volume}: 101 {Issue}: 7 {Year}: Jul 2021 30 {Factor}: 3.875 {DOI}: 10.2340/00015555-3885 {Abstract}: