function drawChartTreatmentsPerAuthor() {
  var chartData = google.visualization.arrayToDataTable([
    ['Series', 'Number of Treatments'],
    ['Brandt, Johann Friedrich', 1],
    ['Despalatović, Marija & Cvitković, Ivan & Žuljević, Ante', 1],
    ['Fassbender, Nico & Stefanoudis, Paris V', 3],
    ['Hoover, John P.', 2],
    ['Kašćelan, Slavica & Mandić, Sreten & Radović, Ivica', 1],
    ['Khodja, Ihcene & Mezali, Karim & Thandar, Ahmed S.', 3],
    ['Madeira, Patrícia & Kroh, Andreas & Cordeiro, Ricardo', 1],
    ['O’Loughlin, P. Mark & Harding 1, Caroline & Paulay, Gustav', 1],
    ['Pawson, David L. & Pawson, Doris J. & King, Rachael A.', 1],
    ['Prata, Jéssica & Manso, Cynthia L. C.', 1],
    ['Selenka, E.', 2],
    ['THANDAR, AHMED S.', 2],
    ['Théel, Hjalmar', 5],
    ['Woo, Sau Pinn & Ogawa, Akito & Tan, Shau Hwai & Yasin, Zulfigar', 3],
    ['Woo, Sau Pinn & Yasin, Zulfigar & Tan, Shau Hwai', 6],
    ['Other (1)', 1]
  ]);
  var chartOptions = {
    pieHole: 0,
    title: 'Treatments per Author (n=34)',
    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);