function drawChartTreatmentsPerAuthor() {
  var chartData = google.visualization.arrayToDataTable([
    ['Series', 'Number of Treatments'],
    ['Cock, Matthew J. W.', 1],
    ['Huemer, Peter & Van Nieukerken, Erik J.', 1],
    ['Kaila, Lauri', 24],
    ['Meyrick,?', 1],
    ['Park, Kyu-Tek & Koo, Jun-Mo & Minet, Joël', 3],
    ['Pohl, Greg & Anweiler, Gary & Schmidt, Christian', 1],
    ['Prins, Jurate De & Sruoga, Virginijus', 25],
    ['Richert, Arnold & Busse, Rainer & Theimer, Franz', 1],
    ['Romero, Fátima', 1],
    ['Sruoga, Virginijus & Kaila, Lauri & Rocienė, Agnė', 1],
    ['Sruoga, Virginijus & Prins, Jurate De', 13],
    ['Telfer, Angela C & Young, Monica R & Quinn, Jenna & Perez, Kate', 1],
    ['Wittland, Wolfgang & Bryner, Rudolf', 1]
  ]);
  var chartOptions = {
    pieHole: 0,
    title: 'Treatments per Author (n=74)',
    fontSize: 'automatic',
    doWeHaveDanglingCommas: 'No ;-)'
  };
  if (window.customizeGoogleChartOptions)
    customizeGoogleChartOptions(chartOptions, 'TreatmentsPerAuthor', 'pie', 13, 0);
  var chart = new google.visualization.PieChart(document.getElementById('chartDivTreatmentsPerAuthor'));
  chart.draw(chartData, chartOptions);
}
google.load('visualization', '1', {'packages': ['corechart']});
google.setOnLoadCallback(drawChartTreatmentsPerAuthor);