function drawChartTreatmentsPerAuthor() {
  var chartData = google.visualization.arrayToDataTable([
    ['Series', 'Number of Treatments'],
    ['Cherchesova, S. K & Shioloshvili, M. N & Yakimov, A. V.', 1],
    ['Darilmaz, Mustafa Cemal & Salur, Ali & Murányi, Dávid', 2],
    ['Khudhur, Farhad A.', 1],
    ['Murányi, Dávid & Manko, Peter & Kovács, Tibor & Vinçon, Gilles', 1],
    ['Zhiltzova, L. A. & Cherchesova, S. K. & Kataev, S. V.', 1]
  ]);
  var chartOptions = {
    pieHole: 0,
    title: 'Treatments per Author (n=6)',
    fontSize: 'automatic',
    doWeHaveDanglingCommas: 'No ;-)'
  };
  if (window.customizeGoogleChartOptions)
    customizeGoogleChartOptions(chartOptions, 'TreatmentsPerAuthor', 'pie', 5, 0);
  var chart = new google.visualization.PieChart(document.getElementById('chartDivTreatmentsPerAuthor'));
  chart.draw(chartData, chartOptions);
}
google.load('visualization', '1', {'packages': ['corechart']});
google.setOnLoadCallback(drawChartTreatmentsPerAuthor);