function drawChartTreatmentsPerAuthor() {
  var chartData = google.visualization.arrayToDataTable([
    ['Series', 'Number of Treatments'],
    ['Carapezza, Attilio & Rădac, Ioan Alexandru', 6],
    ['Dursun, Ahmet & Fent, Meral', 3],
    ['Ghahari, Hassan & Chérot, Frédéric', 30],
    ['Kim, Junggon & Roca-Cusachs, Marcos & Lee, Bong-Woo', 2],
    ['Konstantinov, Fedor V.', 3],
    ['Konstantinov, Fedor V. & Luo, Zhaohui & Vinokurov, Nikolay N.', 2],
    ['Konstantinov, Fedor V. & Namyatova, Anna A.', 5],
    ['Konstantinov, Fedor V. & Vinokurov, Nikolay N.', 2],
    ['Li, Xiao-Ming & Liu, Guo-Qing', 17],
    ['Linnavuori, Rauno E.', 24],
    ['Min Suk, Oh & Kim, WonGun & Park, Jihwan & Lee, Seunghwan', 3],
    ['Sakenin, H. & Samin, N. & Rastegari, J. & Havaskary, M.', 1]
  ]);
  var chartOptions = {
    pieHole: 0,
    title: 'Treatments per Author (n=98)',
    fontSize: 'automatic',
    doWeHaveDanglingCommas: 'No ;-)'
  };
  if (window.customizeGoogleChartOptions)
    customizeGoogleChartOptions(chartOptions, 'TreatmentsPerAuthor', 'pie', 12, 0);
  var chart = new google.visualization.PieChart(document.getElementById('chartDivTreatmentsPerAuthor'));
  chart.draw(chartData, chartOptions);
}
google.load('visualization', '1', {'packages': ['corechart']});
google.setOnLoadCallback(drawChartTreatmentsPerAuthor);