function drawChartTreatmentsPerAuthor() {
  var chartData = google.visualization.arrayToDataTable([
    ['Series', 'Number of Treatments'],
    ['Ahaniazad, M. & Bagheri, M.', 1],
    ['Ahmad Hoseini, M. & Khanjani, M. & Javadi Khederi, S.', 2],
    ['Akyol, Mustafa', 2],
    ['Doġan, Salih', 7],
    ['Ebrahimi, Najmeh & Noei, Javad', 2],
    ['Hatami, Parisa & Jafari, Shahriar & Ahmad-Hosseini, Mohammad', 8],
    ['Khaustov, Alexander', 4],
    ['Khaustov, Alexander A.', 8],
    ['Khosravinejad, Maryam & Jafari, Shahriar & Paktinat-Saeij, Saeid', 2],
    ['Mohammad-Doustaresharaf, Mojtaba & Bagheri, Mohammad', 7],
    ['Mohammad-DoustaresharafK, Mojtaba & KazemiK, Shahrooz', 3],
    ['Paktinat-Saeij, Saeid & Damavandian, Mohammad Reza', 3],
    ['Summers, Francis M. & Schlinger, Evert I.', 2],
    ['Swift, Sabina Fajardo', 2],
    ['Willmann, C.', 5],
    ['Other (4)', 4]
  ]);
  var chartOptions = {
    pieHole: 0,
    title: 'Treatments per Author (n=62)',
    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);