function drawChartTreatmentsPerAuthor() {
  var chartData = google.visualization.arrayToDataTable([
    ['Series', 'Number of Treatments'],
    ['Akrami, Mohammad Ali', 1],
    ['Aoki, Jun-Ichi & Hu, Sheng-Hao', 1],
    ['Balogh, János', 1],
    ['Ermilov, Sergey G. & Bąkowski, Marek', 1],
    ['Ermilov, Sergey G. & Corpuz-Raros, Leonila', 1],
    ['Ermilov, Sergey G. & Kalúz, Stanislav', 1],
    ['Ermilov, Sergey G. & Khaustov, Alexander A.', 2],
    ['Ermilov, Sergey G. & Klimov, Pavel B.', 6],
    ['Ermilov, Sergey G. & Liao, Jhih-Rong', 1],
    ['Ermilov, Sergey G. & Sidorchuk, Ekaterina A.', 1],
    ['Ermilov, Sergey G. & Starý, Josef', 1],
    ['LIU, DONG & YI, TIAN-CI & XU, YUN & ZHANG, ZHI-QIANG', 2],
    ['Liang, Wenqin & Yang, Maofa & Ren, Guoru & Zheng, Qianfen', 2],
    ['Mahunka, S. & Mahunka-Papp, L.', 1],
    ['Villagomez, Fernando & Palacios-Vargas, José G. & Páez, Jair', 3],
    ['Other (3)', 3]
  ]);
  var chartOptions = {
    pieHole: 0,
    title: 'Treatments per Author (n=28)',
    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);