====== Visit 2 of General Assessment 3A ====== Lifelines participants participating in general assessment [[3A]] visit a [[location]] of their choice for a second time.\\ At the location, they undergo the following procedures: * Fasting venapuncture to collect [[blood samples]] for [[blood analyses]] and [[blood samples storage|storage]] (8+ years old). * Handing in of 24-h [[urine samples]] for [[urine analyses]] and [[urine samples storage]] (18+ years old) * Handing in of timed overnight [[ urine samples]] for [[urine analyses]] and [[urine samples storage]] (8-17 years old). 3A Visit 2 is preceded by [[3A Visit 1]] within xx days (according to protocol).\\ 3A Visit 2 is accompanied by [[3A Questionnaire 2]] which is filled in within xx days prior to 3A visit 2 (according to protocol).\\ 3A Visit 2 is the final part of general assessment [[3A]]. 3A Visit 2 is procedurally equivalent to [[3A Visit 2]] and [[2A Visit 2]]. The average time between 2A Visit 2 and 3A Visit 2 will be xx years (according to protocol).