function drawChartTreatmentsPerAuthor() {
  var chartData = google.visualization.arrayToDataTable([
    ['Series', 'Number of Treatments'],
    ['Ahmad, Jalil & Shah, Suresh Kr. & Mishra, Purnendu', 2],
    ['Bayarsaikhan, Ulziijargal & Im, Kyung-Hoan & Bae, Yang-Seop', 1],
    ['Joshi, Rahul & Singh, Navneet & Kirti, Jagbir Singh', 3],
    ['Singh, Navneet & Joshi, Rahul & Kirti, Jagbir Singh', 1],
    ['Singh, Navneet & Volynkin, Anton V. & Kirti, Jagbir Singh', 3],
    ['Singh, Santosh & Kirti, Jagbir Singh & Joshi, Rahul', 9],
    ['Volynkin, Anton V.', 1],
    ['Volynkin, Anton V. & Dubatolov, Vladimir V. & Kishida, Yasunori', 1],
    ['Volynkin, Anton V. & Huang, Si-Yao', 5],
    ['Volynkin, Anton V. & Huang, Si-Yao & Spitsyna, Elizaveta A.', 1],
    ['Volynkin, Anton V. & Saldaitis, Aidas & Müller, Günter C.', 6],
    ['Volynkin, Anton V. & Singh, Navneet & Černý, Karel', 20],
    ['Volynkin, Anton V. & Černý, Karel', 5],
    ['Volynkin, Anton V. & Černý, Karel & Huang, Si-Yao', 5],
    ['Xian, Chunlan & Leong, Chi Man & Luo, Jiuyang & Jia, Fenglong', 1]
  ]);
  var chartOptions = {
    pieHole: 0,
    title: 'Treatments per Author (n=64)',
    fontSize: 'automatic',
    doWeHaveDanglingCommas: 'No ;-)'
  };
  if (window.customizeGoogleChartOptions)
    customizeGoogleChartOptions(chartOptions, 'TreatmentsPerAuthor', 'pie', 15, 0);
  var chart = new google.visualization.PieChart(document.getElementById('chartDivTreatmentsPerAuthor'));
  chart.draw(chartData, chartOptions);
}
google.load('visualization', '1', {'packages': ['corechart']});
google.setOnLoadCallback(drawChartTreatmentsPerAuthor);