function drawChartTreatmentsPerAuthor() {
  var chartData = google.visualization.arrayToDataTable([
    ['Series', 'Number of Treatments'],
    ['Dijkstra, Klaas-Douwe B. & Kalkman, Vincent J. & Dow, Rory A.', 26],
    ['Dow, R. A. & Orr, A. G.', 21],
    ['Dow, Rory A.', 3],
    ['Dow, Rory A. & Kompier, Tom & Phan, Quoc Toan', 4],
    ['Dow, Rory A. & Zhang, Hao-Miao', 3],
    ['Guo, Mingxia & Xing, Lida & Wang, Bo & Zhang, Weiwei', 3],
    ['Jocque, Merlijn & Garrison, Rosser', 6],
    ['Joshi, Shantanu & Subramanian, K. A. & Babu, R.', 5],
    ['Kompier, Tom', 7],
    ['Lieftinck, M. A.', 3],
    ['Mauffray, William F. & Tennessen, Kenneth J.', 3],
    ['Phan, Quoc Toan & Kompier, Tom', 11],
    ['Phan, Quoc Toan & Yokoi, Naoto & Makbun, Noppadon', 13],
    ['Tol, Van', 24],
    ['van Tol, Jan', 9],
    ['Other (19)', 26]
  ]);
  var chartOptions = {
    pieHole: 0,
    title: 'Treatments per Author (n=167)',
    fontSize: 'automatic',
    doWeHaveDanglingCommas: 'No ;-)'
  };
  if (window.customizeGoogleChartOptions)
    customizeGoogleChartOptions(chartOptions, 'TreatmentsPerAuthor', 'pie', 16, 0);
  var chart = new google.visualization.PieChart(document.getElementById('chartDivTreatmentsPerAuthor'));
  chart.draw(chartData, chartOptions);
}
google.load('visualization', '1', {'packages': ['corechart']});
google.setOnLoadCallback(drawChartTreatmentsPerAuthor);