function drawChartTreatmentsPerAuthor() {
  var chartData = google.visualization.arrayToDataTable([
    ['Series', 'Number of Treatments'],
    ['DeMarmels, Jurg', 4],
    ['Dijkstra, Klaas-Douwe B. & Kalkman, Vincent J. & Dow, Rory A.', 17],
    ['Hagen, H.', 9],
    ['Jocque, Merlijn & Garrison, Rosser', 4],
    ['K. J. Morton', 3],
    ['Kormondy, E. J.', 3],
    ['Legrand, Jean', 10],
    ['Lieftinck, M. A.', 6],
    ['Martin, R.', 5],
    ['Mauffray, William F. & Tennessen, Kenneth J.', 5],
    ['Mélanie Turiault', 4],
    ['Takiya, Daniela Maeda & Santos, Allan Paulo Moreira', 8],
    ['Vega-Sánchez, Yesenia Margarita & Mendoza-Cuenca, Luis Felipe', 3],
    ['Yu, Xin & Xue, Junli & Hämäläinen, Matti & Liu, Yang', 3],
    ['de Sélys-Longchamps, Edmond', 21],
    ['Other (27)', 36]
  ]);
  var chartOptions = {
    pieHole: 0,
    title: 'Treatments per Author (n=141)',
    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);