function drawChartTreatmentsPerAuthor() {
  var chartData = google.visualization.arrayToDataTable([
    ['Series', 'Number of Treatments'],
    ['Benkenana, Naima & Massa, Bruno', 2],
    ['Chobanov, Dragan & Massa, Bruno', 27],
    ['Gankhuyag, Enkhtsetseg & Dorjsuren, Altanchimeg & Choi, Eun Hwa', 9],
    ['Ghahari, H. & Havaskary, M. & Tabari, M. & Ostovan, H.', 2],
    ['Hemp, Claudia', 3],
    ['Hollier, John', 10],
    ['Louveaux, Alain & Garcin, Annie & Desutter-Grandcolas, Laure', 3],
    ['MACHÁýKOVÁ, Lenka & FIKÁýEK, Martin', 9],
    ['Massa, Bruno', 103],
    ['Massa, Bruno & Ünal, Mustafa & Verde, Gabriella Lo', 8],
    ['Taylan, Mehmet Sait & Şirin, Deniz & Sevgili, Hasan', 8],
    ['Tlili, Haithem & Abdellaoui, Khemais', 12],
    ['Usmani, Mohammad Kamil', 35],
    ['Yu, Sergey & Paik, Jong-Cheol', 3],
    ['Ünal, Mustafa', 396],
    ['Other (18)', 24]
  ]);
  var chartOptions = {
    pieHole: 0,
    title: 'Treatments per Author (n=654)',
    fontSize: 'automatic',
    doWeHaveDanglingCommas: 'No ;-)'
  };
  if (window.customizeGoogleChartOptions)
    customizeGoogleChartOptions(chartOptions, 'TreatmentsPerAuthor', 'pie', 16, 0);
  var chart = new google.visualization.PieChart(document.getElementById('chartDivTreatmentsPerAuthor'));
  chart.draw(chartData, chartOptions);
}
google.load('visualization', '1', {'packages': ['corechart']});
google.setOnLoadCallback(drawChartTreatmentsPerAuthor);