function drawChartTreatmentsPerAuthor() {
  var chartData = google.visualization.arrayToDataTable([
    ['Series', 'Number of Treatments'],
    ['Aslan, Ebru Gül & Mumladze, Levan & Japoshvili, George', 1],
    ['Ekiz, Ali Nafiz & Şen, İsmail & Aslan, Ebru Gül & Gök, Ali', 1],
    ['Garilleti, Ricardo & Albertos, Belén & Draper, Isabel', 3],
    ['Lowry, J. K. & Stoddart, H. E.', 7],
    ['Maier, Eva & Price, Michelle J.', 1],
    ['Nadein, Konstantin S. & Ahmed, Zubair & Sergeev, Maxim', 2],
    ['Osman, Imen Ben & Hugonnot, Vincent & Muller, Serge D.', 2],
    ['Pantović, Jovana & Veljić, Milan & Grdović, Svetlana', 1],
    ['Price, Michelle J.', 3],
    ['Romantsov, Pavel V. & Moseyko, Alexey G.', 1],
    ['Thomas Kiebacher & Michael Lüth', 1],
    ['Thouvenot, Louis & Müller, Frank', 1],
    ['Yu, Ning-Ning & Jia, Yu', 10],
    ['Zoia, Stefano', 5]
  ]);
  var chartOptions = {
    pieHole: 0,
    title: 'Treatments per Author (n=39)',
    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);