function drawChartTreatmentsPerAuthor() {
  var chartData = google.visualization.arrayToDataTable([
    ['Series', 'Number of Treatments'],
    ['Aslan, Ebru Gül & Mumladze, Levan & Japoshvili, George', 1],
    ['Biondi, Maurizio & D\'Alessandro, Paola', 1],
    ['Borges, Paulo A. V. & Gaspar, Clara', 2],
    ['Cho, H. - W. & An, S. L.', 11],
    ['Clark, Shawn M. & Lillrose, Tiffany & Belo Neto, Luiz A.', 2],
    ['Crotch, G. R.', 1],
    ['Ekiz, Ali Nafiz & Şen, İsmail & Aslan, Ebru Gül & Gök, Ali', 1],
    ['Faisal, Mohammad & Singh, Sudhir', 1],
    ['Nadein, Konstantin S. & Ahmed, Zubair & Sergeev, Maxim', 1],
    ['Pentinsaari, Mikko & Anderson, Robert & Borowiec, Lech', 1],
    ['Petitpierre, Eduard & Sacarés, Antoni & Jurado-Rivera, José A.', 4],
    ['Ruan, Yongying & Konstantinov, Alexander S. & Ge, Siqin', 10],
    ['Ruan, Yongying & Yang, Xingke & Konstantinov, Alexander S.', 90],
    ['Sergeev, M. E.', 1]
  ]);
  var chartOptions = {
    pieHole: 0,
    title: 'Treatments per Author (n=127)',
    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);