function drawChartTreatmentsPerAuthor() {
  var chartData = google.visualization.arrayToDataTable([
    ['Series', 'Number of Treatments'],
    ['Artmann-Graf, Georg', 1],
    ['Broad, Gavin R.', 42],
    ['Di Giovanni, Filippo & Reshchikov, Alexey & Riedel, Matthias', 2],
    ['Ghahari, H. & Jussila, R.', 2],
    ['Ghahari, H. & Jussila, R. & I, Northwestern', 2],
    ['Kasparyan, Dmitri R. & Khalaim, Andrey I.', 3],
    ['Kolarov, J.', 1],
    ['Kolarov, J. & Çalmasur, Ö.', 1],
    ['Riedel & Pénigot & Schwarz & Diller & Johansson & Japoshvili, G.', 8],
    ['Riedel, Matthias & Diller, Erich & Japoshvili, George', 4]
  ]);
  var chartOptions = {
    pieHole: 0,
    title: 'Treatments per Author (n=66)',
    fontSize: 'automatic',
    doWeHaveDanglingCommas: 'No ;-)'
  };
  if (window.customizeGoogleChartOptions)
    customizeGoogleChartOptions(chartOptions, 'TreatmentsPerAuthor', 'pie', 10, 0);
  var chart = new google.visualization.PieChart(document.getElementById('chartDivTreatmentsPerAuthor'));
  chart.draw(chartData, chartOptions);
}
google.load('visualization', '1', {'packages': ['corechart']});
google.setOnLoadCallback(drawChartTreatmentsPerAuthor);