أرسل هذا في رسالة قصيرة: The shadow prices of voluntary caregiving: using well-being panel data to estimate the cost of informal care

  _  __   _    _     ______    ______            
 | |/ // | || | ||  /_   _//  /_   _//     ___   
 | ' //  | || | ||  `-| |,-    -| ||-     /   || 
 | . \\  | \\_/ ||    | ||     _| ||_    | [] || 
 |_|\_\\  \____//     |_||    /_____//    \__ || 
 `-` --`   `---`      `-`'    `-----`      -|_|| 
                                            `-`