function drawChartTreatmentsPerAuthor() {
  var chartData = google.visualization.arrayToDataTable([
    ['Series', 'Number of Treatments'],
    ['Bartlett, Justin S.', 1],
    ['Barševskis, Arvīds & Janovska, Marina & Aksjuta, Kristīna', 2],
    ['Faisal, Mohammad & Singh, Sudhir & Yousuf, Mohammad', 2],
    ['Gorham, Henry Stephen', 1],
    ['Majka, Christopher G.', 2],
    ['Mitter, Heinz & A, Upper', 1],
    ['Pic, Maurice', 1],
    ['Ruchin, Alexaner B. & Egorov, Leonid V. & Alekseev, Sergei K.', 1],
    ['Webster, Reginald P. & Sweeney, Jon D. & DeMerchant, Ian', 1],
    ['Webster, Reginald P. & Webster, Vincent L.', 2],
    ['Zappi, Iuri & Ghahari, Hassan', 1]
  ]);
  var chartOptions = {
    pieHole: 0,
    title: 'Treatments per Author (n=15)',
    fontSize: 'automatic',
    doWeHaveDanglingCommas: 'No ;-)'
  };
  if (window.customizeGoogleChartOptions)
    customizeGoogleChartOptions(chartOptions, 'TreatmentsPerAuthor', 'pie', 11, 0);
  var chart = new google.visualization.PieChart(document.getElementById('chartDivTreatmentsPerAuthor'));
  chart.draw(chartData, chartOptions);
}
google.load('visualization', '1', {'packages': ['corechart']});
google.setOnLoadCallback(drawChartTreatmentsPerAuthor);