function drawChartTreatmentsPerAuthor() {
  var chartData = google.visualization.arrayToDataTable([
    ['Series', 'Number of Treatments'],
    ['Abadjiev, Stanislav & Langourov, Mario', 1],
    ['Aistleitner, E.', 3],
    ['Aistleitner, Eyjolf', 3],
    ['Bland, Keith P.', 2],
    ['Bonelli, Simona & Barbero, Francesca & Casacci, Luca Pietro', 1],
    ['Edwards, William H.', 1],
    ['Hu, Shao-Ji & Cotton, Adam M. & Lamas, Gerardo & Duan, Kuang', 19],
    ['Yakovlev, Roman V. & Bakhaev, Yuri I.', 4],
    ['Yakovlev, Roman V. & Shapoval, Nazar A. & Bakhaev, Yuri I.', 1],
    ['Zahiri, Reza & Nazari, Vazrick & Rajaei, Hossein', 40]
  ]);
  var chartOptions = {
    pieHole: 0,
    title: 'Treatments per Author (n=75)',
    fontSize: 'automatic',
    doWeHaveDanglingCommas: 'No ;-)'
  };
  if (window.customizeGoogleChartOptions)
    customizeGoogleChartOptions(chartOptions, 'TreatmentsPerAuthor', 'pie', 10, 0);
  var chart = new google.visualization.PieChart(document.getElementById('chartDivTreatmentsPerAuthor'));
  chart.draw(chartData, chartOptions);
}
google.load('visualization', '1', {'packages': ['corechart']});
google.setOnLoadCallback(drawChartTreatmentsPerAuthor);