function drawChartTreatmentsPerAuthor() {
  var chartData = google.visualization.arrayToDataTable([
    ['Series', 'Number of Treatments'],
    ['Chamberlin, Ralph V.', 1],
    ['Curtis, John', 1],
    ['Evsyukov, Aleksandr & Golovatch, Sergei & Reip, Hans S.', 11],
    ['Golovatch, Sergei I. & Wesener, Thomas', 2],
    ['Haľkova, Beata & Drabova, Martina & Mock, Andrej', 4],
    ['John Hollier & Edmund Schiller & Nesrine Akkari', 2],
    ['Karsch, F.', 1],
    ['Kime, Richard Desmond & Enghoff, Henrik', 5],
    ['Korobushkin, Daniil I. & Semenyuk, Irina I. & Tuf, Ivan H.', 2],
    ['Linnaeus, Carolus', 9],
    ['Mikhaljova, Elena V.', 2],
    ['Nefediev, P. S.', 1],
    ['Nefedieva, Julia S. & Nefediev, Pavel S.', 2],
    ['Telfer, Angela C & Young, Monica R & Quinn, Jenna & Perez, Kate', 1]
  ]);
  var chartOptions = {
    pieHole: 0,
    title: 'Treatments per Author (n=44)',
    fontSize: 'automatic',
    doWeHaveDanglingCommas: 'No ;-)'
  };
  if (window.customizeGoogleChartOptions)
    customizeGoogleChartOptions(chartOptions, 'TreatmentsPerAuthor', 'pie', 14, 0);
  var chart = new google.visualization.PieChart(document.getElementById('chartDivTreatmentsPerAuthor'));
  chart.draw(chartData, chartOptions);
}
google.load('visualization', '1', {'packages': ['corechart']});
google.setOnLoadCallback(drawChartTreatmentsPerAuthor);